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|  | 13 <pre> | 
|  | 14 <a name="package-PeriodicTable-"></a>   1 <span class="k">package </span><span class="i">PeriodicTable</span><span class="sc">;</span> | 
|  | 15    2 <span class="c">#</span> | 
|  | 16    3 <span class="c"># $RCSfile: PeriodicTable.pm,v $</span> | 
|  | 17    4 <span class="c"># $Date: 2015/02/28 20:47:18 $</span> | 
|  | 18    5 <span class="c"># $Revision: 1.37 $</span> | 
|  | 19    6 <span class="c">#</span> | 
|  | 20    7 <span class="c"># Author: Manish Sud <msud@san.rr.com></span> | 
|  | 21    8 <span class="c">#</span> | 
|  | 22    9 <span class="c"># Copyright (C) 2015 Manish Sud. All rights reserved.</span> | 
|  | 23   10 <span class="c">#</span> | 
|  | 24   11 <span class="c"># This file is part of MayaChemTools.</span> | 
|  | 25   12 <span class="c">#</span> | 
|  | 26   13 <span class="c"># MayaChemTools is free software; you can redistribute it and/or modify it under</span> | 
|  | 27   14 <span class="c"># the terms of the GNU Lesser General Public License as published by the Free</span> | 
|  | 28   15 <span class="c"># Software Foundation; either version 3 of the License, or (at your option) any</span> | 
|  | 29   16 <span class="c"># later version.</span> | 
|  | 30   17 <span class="c">#</span> | 
|  | 31   18 <span class="c"># MayaChemTools is distributed in the hope that it will be useful, but without</span> | 
|  | 32   19 <span class="c"># any warranty; without even the implied warranty of merchantability of fitness</span> | 
|  | 33   20 <span class="c"># for a particular purpose.  See the GNU Lesser General Public License for more</span> | 
|  | 34   21 <span class="c"># details.</span> | 
|  | 35   22 <span class="c">#</span> | 
|  | 36   23 <span class="c"># You should have received a copy of the GNU Lesser General Public License</span> | 
|  | 37   24 <span class="c"># along with MayaChemTools; if not, see <http://www.gnu.org/licenses/> or</span> | 
|  | 38   25 <span class="c"># write to the Free Software Foundation Inc., 59 Temple Place, Suite 330,</span> | 
|  | 39   26 <span class="c"># Boston, MA, 02111-1307, USA.</span> | 
|  | 40   27 <span class="c">#</span> | 
|  | 41   28 | 
|  | 42   29 <span class="k">use</span> <span class="w">strict</span><span class="sc">;</span> | 
|  | 43   30 <span class="k">use</span> <span class="w">Carp</span><span class="sc">;</span> | 
|  | 44   31 <span class="k">use</span> <span class="w">Text::ParseWords</span><span class="sc">;</span> | 
|  | 45   32 <span class="k">use</span> <span class="w">TextUtil</span><span class="sc">;</span> | 
|  | 46   33 <span class="k">use</span> <span class="w">FileUtil</span><span class="sc">;</span> | 
|  | 47   34 | 
|  | 48   35 <span class="k">use</span> <span class="w">vars</span> <span class="q">qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS)</span><span class="sc">;</span> | 
|  | 49   36 | 
|  | 50   37 <span class="i">@ISA</span> = <span class="q">qw(Exporter)</span><span class="sc">;</span> | 
|  | 51   38 <span class="i">@EXPORT</span> = <span class="q">qw()</span><span class="sc">;</span> | 
|  | 52   39 <span class="i">@EXPORT_OK</span> = <span class="q">qw(GetElements GetElementsByGroupName GetElementsByGroupNumber GetElementsByAmericanStyleGroupLabel GetElementsByEuropeanStyleGroupLabel GetElementsByPeriodNumber GetElementMostAbundantNaturalIsotopeData GetElementNaturalIsotopeCount GetElementNaturalIsotopesData GetElementNaturalIsotopeAbundance GetElementMostAbundantNaturalIsotopeMass GetElementMostAbundantNaturalIsotopeMassNumber GetElementNaturalIsotopeMass GetElementPropertiesData GetElementPropertiesNames GetElementPropertiesNamesAndUnits GetElementPropertyUnits GetIUPACGroupNumberFromAmericanStyleGroupLabel GetIUPACGroupNumberFromEuropeanStyleGroupLabel IsElement IsElementNaturalIsotopeMassNumber IsElementProperty)</span><span class="sc">;</span> | 
|  | 53   40 | 
|  | 54   41 <span class="i">%EXPORT_TAGS</span> = <span class="s">(</span><span class="w">all</span>  <span class="cm">=></span> <span class="s">[</span><span class="i">@EXPORT</span><span class="cm">,</span> <span class="i">@EXPORT_OK</span><span class="s">]</span><span class="s">)</span><span class="sc">;</span> | 
|  | 55   42 | 
|  | 56   43 <span class="c">#</span> | 
|  | 57   44 <span class="c"># Load atomic properties and isotope data for elements...</span> | 
|  | 58   45 <span class="c">#</span> | 
|  | 59   46 <span class="k">my</span><span class="s">(</span><span class="i">%ElementDataMap</span><span class="cm">,</span> <span class="i">%ElementIsotopeDataMap</span><span class="cm">,</span> <span class="i">%ElementSymbolMap</span><span class="cm">,</span> <span class="i">@ElementPropertyNames</span><span class="cm">,</span> <span class="i">%ElementPropertyNamesMap</span><span class="cm">,</span> <span class="i">%ElementIsotopeDerivedDataMap</span><span class="s">)</span><span class="sc">;</span> | 
|  | 60   47 <span class="i">_LoadPeriodicTableElementData</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 61   48 | 
|  | 62   49 <span class="c">#</span> | 
|  | 63   50 <span class="c"># Get a list of all known element symbols...</span> | 
|  | 64   51 <span class="c">#</span> | 
|  | 65 <a name="GetElements-"></a>  52 <span class="k">sub </span><span class="m">GetElements</span> <span class="s">{</span> | 
|  | 66   53   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 67   54 | 
|  | 68   55   <span class="i">@ElementSymbols</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 69   56   <span class="k">for</span> <span class="i">$AtomicNumber</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span><span class="i">$a</span> <=> <span class="i">$b</span><span class="s">}</span> <span class="k">keys</span> <span class="i">%ElementDataMap</span><span class="s">)</span> <span class="s">{</span> | 
|  | 70   57       <span class="k">push</span> <span class="i">@ElementSymbols</span><span class="cm">,</span> <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">ElementSymbol</span>}<span class="sc">;</span> | 
|  | 71   58   <span class="s">}</span> | 
|  | 72   59   <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="i">@ElementSymbols</span> <span class="co">:</span> \<span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 73   60 <span class="s">}</span> | 
|  | 74   61 | 
|  | 75   62 <span class="c">#</span> | 
|  | 76   63 <span class="c"># Get element symbols of elements with a specific group name. Valid group</span> | 
|  | 77   64 <span class="c"># names are: Alkali metals, Alkaline earth metals, Coinage metals, Pnictogens,</span> | 
|  | 78   65 <span class="c"># Chalcogens, Halogens, Noble gases; Additionally, usage of Lanthanides (Lanthanoids)</span> | 
|  | 79   66 <span class="c"># and Actinides (Actinoids) is also supported.</span> | 
|  | 80   67 <span class="c">#</span> | 
|  | 81 <a name="GetElementsByGroupName-"></a>  68 <span class="k">sub </span><span class="m">GetElementsByGroupName</span> <span class="s">{</span> | 
|  | 82   69   <span class="k">my</span><span class="s">(</span><span class="i">$SpecifiedGroupName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 83   70   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">@ElementSymbols</span><span class="cm">,</span> <span class="i">$GroupName</span><span class="s">)</span><span class="sc">;</span> | 
|  | 84   71 | 
|  | 85   72   <span class="k">if</span> <span class="s">(</span><span class="i">IsEmpty</span><span class="s">(</span><span class="i">$SpecifiedGroupName</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 86   73     <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="s">(</span><span class="s">)</span> <span class="co">:</span> <span class="k">undef</span><span class="s">)</span><span class="sc">;</span> | 
|  | 87   74   <span class="s">}</span> | 
|  | 88   75   <span class="k">if</span> <span class="s">(</span><span class="i">$SpecifiedGroupName</span> =~ <span class="q">/Lanthanide/i</span><span class="s">)</span> <span class="s">{</span> | 
|  | 89   76     <span class="i">$SpecifiedGroupName</span> = <span class="q">'Lanthanoids'</span><span class="sc">;</span> | 
|  | 90   77   <span class="s">}</span> | 
|  | 91   78   <span class="k">elsif</span> <span class="s">(</span><span class="i">$SpecifiedGroupName</span> =~ <span class="q">/Actinide/i</span><span class="s">)</span> <span class="s">{</span> | 
|  | 92   79     <span class="i">$SpecifiedGroupName</span> = <span class="q">'Actinoids'</span><span class="sc">;</span> | 
|  | 93   80   <span class="s">}</span> | 
|  | 94   81   <span class="i">@ElementSymbols</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 95   82   <span class="k">for</span> <span class="i">$AtomicNumber</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span><span class="i">$a</span> <=> <span class="i">$b</span><span class="s">}</span> <span class="k">keys</span> <span class="i">%ElementDataMap</span><span class="s">)</span> <span class="s">{</span> | 
|  | 96   83     <span class="i">$GroupName</span> = <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">GroupName</span>}<span class="sc">;</span> | 
|  | 97   84     <span class="k">if</span> <span class="s">(</span><span class="i">$SpecifiedGroupName</span> =~ <span class="q">/$GroupName/i</span> <span class="s">)</span> <span class="s">{</span> | 
|  | 98   85       <span class="k">push</span> <span class="i">@ElementSymbols</span><span class="cm">,</span> <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">ElementSymbol</span>}<span class="sc">;</span> | 
|  | 99   86     <span class="s">}</span> | 
|  | 100   87   <span class="s">}</span> | 
|  | 101   88   <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="i">@ElementSymbols</span> <span class="co">:</span> \<span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 102   89 <span class="s">}</span> | 
|  | 103   90 | 
|  | 104   91 <span class="c">#</span> | 
|  | 105   92 <span class="c"># Get element symbols of elements in a specific IUPAC group number.</span> | 
|  | 106   93 <span class="c"># A reference to an array containing element symbols is returned.</span> | 
|  | 107   94 <span class="c">#</span> | 
|  | 108 <a name="GetElementsByGroupNumber-"></a>  95 <span class="k">sub </span><span class="m">GetElementsByGroupNumber</span> <span class="s">{</span> | 
|  | 109   96   <span class="k">my</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 110   97   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 111   98 | 
|  | 112   99   <span class="k">if</span> <span class="s">(</span>!<span class="i">IsInteger</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 113  100     <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="s">(</span><span class="s">)</span> <span class="co">:</span> <span class="k">undef</span><span class="s">)</span><span class="sc">;</span> | 
|  | 114  101   <span class="s">}</span> | 
|  | 115  102 | 
|  | 116  103   <span class="i">@ElementSymbols</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 117  104   <span class="k">for</span> <span class="i">$AtomicNumber</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span><span class="i">$a</span> <=> <span class="i">$b</span><span class="s">}</span> <span class="k">keys</span> <span class="i">%ElementDataMap</span><span class="s">)</span> <span class="s">{</span> | 
|  | 118  105     <span class="k">if</span> <span class="s">(</span><span class="i">$GroupNumber</span> <span class="k">eq</span> <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">GroupNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 119  106       <span class="k">push</span> <span class="i">@ElementSymbols</span><span class="cm">,</span> <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">ElementSymbol</span>}<span class="sc">;</span> | 
|  | 120  107     <span class="s">}</span> | 
|  | 121  108   <span class="s">}</span> | 
|  | 122  109   <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="i">@ElementSymbols</span> <span class="co">:</span> \<span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 123  110 <span class="s">}</span> | 
|  | 124  111 | 
|  | 125  112 <span class="c">#</span> | 
|  | 126  113 <span class="c"># Get element symbols of elements in a specific American style group label.</span> | 
|  | 127  114 <span class="c"># A reference to an array containing element symbols is returned.</span> | 
|  | 128  115 <span class="c">#</span> | 
|  | 129 <a name="GetElementsByAmericanStyleGroupLabel-"></a> 116 <span class="k">sub </span><span class="m">GetElementsByAmericanStyleGroupLabel</span> <span class="s">{</span> | 
|  | 130  117   <span class="k">my</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 131  118 | 
|  | 132  119   <span class="k">return</span> <span class="i">_GetElementsByGroupLabel</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="cm">,</span> <span class="q">'AmericanStyle'</span><span class="s">)</span><span class="sc">;</span> | 
|  | 133  120 <span class="s">}</span> | 
|  | 134  121 | 
|  | 135  122 <span class="c">#</span> | 
|  | 136  123 <span class="c"># Get element symbols of elements in a specific European style group label.</span> | 
|  | 137  124 <span class="c"># A reference to an array containing element symbols is returned.</span> | 
|  | 138  125 <span class="c">#</span> | 
|  | 139 <a name="GetElementsByEuropeanStyleGroupLabel-"></a> 126 <span class="k">sub </span><span class="m">GetElementsByEuropeanStyleGroupLabel</span> <span class="s">{</span> | 
|  | 140  127   <span class="k">my</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 141  128 | 
|  | 142  129   <span class="k">return</span> <span class="i">_GetElementsByGroupLabel</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="cm">,</span> <span class="q">'EuropeanStyle'</span><span class="s">)</span><span class="sc">;</span> | 
|  | 143  130 <span class="s">}</span> | 
|  | 144  131 | 
|  | 145  132 <span class="c">#</span> | 
|  | 146  133 <span class="c"># Get IUPAC group number from American style group label. A comma delimited</span> | 
|  | 147  134 <span class="c"># string is returned for group VIII or VIIIB.</span> | 
|  | 148  135 <span class="c">#</span> | 
|  | 149 <a name="GetIUPACGroupNumberFromAmericanStyleGroupLabel-"></a> 136 <span class="k">sub </span><span class="m">GetIUPACGroupNumberFromAmericanStyleGroupLabel</span> <span class="s">{</span> | 
|  | 150  137   <span class="k">my</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 151  138   <span class="k">my</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 152  139 | 
|  | 153  140   <span class="k">if</span> <span class="s">(</span><span class="i">IsEmpty</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 154  141     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 155  142   <span class="s">}</span> | 
|  | 156  143   <span class="i">$GroupNumber</span> = <span class="q">""</span><span class="sc">;</span> | 
|  | 157  144   <span class="j">SWITCH:</span> <span class="s">{</span> | 
|  | 158  145       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">1</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 159  146       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">2</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 160  147       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">3</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 161  148       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IVB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">4</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 162  149       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">5</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 163  150       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">6</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 164  151       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">7</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 165  152       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^(VIII|VIIIB)$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="q">'8,9,10'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 166  153       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">11</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 167  154       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">12</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 168  155       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">13</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 169  156       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IVA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">14</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 170  157       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">15</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 171  158       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">16</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 172  159       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">17</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 173  160       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIIIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">18</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 174  161       <span class="i">$GroupNumber</span> = <span class="q">""</span><span class="sc">;</span> | 
|  | 175  162   <span class="s">}</span> | 
|  | 176  163   <span class="k">if</span> <span class="s">(</span>!<span class="i">$GroupNumber</span><span class="s">)</span> <span class="s">{</span> | 
|  | 177  164     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 178  165   <span class="s">}</span> | 
|  | 179  166   <span class="k">return</span> <span class="i">$GroupNumber</span><span class="sc">;</span> | 
|  | 180  167 <span class="s">}</span> | 
|  | 181  168 | 
|  | 182  169 <span class="c">#</span> | 
|  | 183  170 <span class="c"># Get IUPAC group number from European style group label. A comma delimited</span> | 
|  | 184  171 <span class="c"># string is returned for group VIII or VIIIA</span> | 
|  | 185  172 <span class="c">#</span> | 
|  | 186 <a name="GetIUPACGroupNumberFromEuropeanStyleGroupLabel-"></a> 173 <span class="k">sub </span><span class="m">GetIUPACGroupNumberFromEuropeanStyleGroupLabel</span> <span class="s">{</span> | 
|  | 187  174   <span class="k">my</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 188  175   <span class="k">my</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 189  176 | 
|  | 190  177   <span class="k">if</span> <span class="s">(</span><span class="i">IsEmpty</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 191  178     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 192  179   <span class="s">}</span> | 
|  | 193  180   <span class="i">$GroupNumber</span> = <span class="q">""</span><span class="sc">;</span> | 
|  | 194  181   <span class="j">SWITCH:</span> <span class="s">{</span> | 
|  | 195  182       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">1</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 196  183       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">2</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 197  184       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">3</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 198  185       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IVA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">4</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 199  186       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">5</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 200  187       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">6</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 201  188       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIIA$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">7</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 202  189       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^(VIII|VIIIA)$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="q">'8,9,10'</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 203  190       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">11</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 204  191       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">12</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 205  192       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IIIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">13</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 206  193       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^IVB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">14</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 207  194       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">15</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 208  195       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">16</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 209  196       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">17</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 210  197       <span class="k">if</span> <span class="s">(</span><span class="i">$GroupLabel</span> =~ <span class="q">/^VIIIB$/</span><span class="s">)</span> <span class="s">{</span> <span class="i">$GroupNumber</span> = <span class="n">18</span><span class="sc">;</span> <span class="k">last</span> <span class="j">SWITCH</span><span class="sc">;</span><span class="s">}</span> | 
|  | 211  198       <span class="i">$GroupNumber</span> = <span class="q">""</span><span class="sc">;</span> | 
|  | 212  199   <span class="s">}</span> | 
|  | 213  200   <span class="k">if</span> <span class="s">(</span>!<span class="i">$GroupNumber</span><span class="s">)</span> <span class="s">{</span> | 
|  | 214  201     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 215  202   <span class="s">}</span> | 
|  | 216  203   <span class="k">return</span> <span class="i">$GroupNumber</span><span class="sc">;</span> | 
|  | 217  204 <span class="s">}</span> | 
|  | 218  205 | 
|  | 219  206 <span class="c">#</span> | 
|  | 220  207 <span class="c"># Get element symbols of elements in a specific period number.</span> | 
|  | 221  208 <span class="c"># A reference to an array containing element symbols is returned.</span> | 
|  | 222  209 <span class="c">#</span> | 
|  | 223 <a name="GetElementsByPeriodNumber-"></a> 210 <span class="k">sub </span><span class="m">GetElementsByPeriodNumber</span> <span class="s">{</span> | 
|  | 224  211   <span class="k">my</span><span class="s">(</span><span class="i">$SpecifiedPeriodNumber</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 225  212   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$PeriodNumber</span><span class="cm">,</span> <span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 226  213 | 
|  | 227  214   <span class="k">if</span> <span class="s">(</span>!<span class="i">IsInteger</span><span class="s">(</span><span class="i">$SpecifiedPeriodNumber</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 228  215     <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="s">(</span><span class="s">)</span> <span class="co">:</span> <span class="k">undef</span><span class="s">)</span><span class="sc">;</span> | 
|  | 229  216   <span class="s">}</span> | 
|  | 230  217 | 
|  | 231  218   <span class="i">@ElementSymbols</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 232  219   <span class="k">for</span> <span class="i">$AtomicNumber</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span><span class="i">$a</span> <=> <span class="i">$b</span><span class="s">}</span> <span class="k">keys</span> <span class="i">%ElementDataMap</span><span class="s">)</span> <span class="s">{</span> | 
|  | 233  220     <span class="i">$PeriodNumber</span> = <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">PeriodNumber</span>}<span class="sc">;</span> | 
|  | 234  221     <span class="k">if</span> <span class="s">(</span><span class="i">$PeriodNumber</span> =~ <span class="q">/\(/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 235  222       <span class="c"># Lanthanides and Actinides...</span> | 
|  | 236  223       <span class="s">(</span><span class="i">$PeriodNumber</span><span class="s">)</span> = <span class="k">split</span> <span class="q">/\(/</span><span class="cm">,</span> <span class="i">$PeriodNumber</span><span class="sc">;</span> | 
|  | 237  224     <span class="s">}</span> | 
|  | 238  225     <span class="k">if</span> <span class="s">(</span><span class="i">$PeriodNumber</span> == <span class="i">$SpecifiedPeriodNumber</span><span class="s">)</span> <span class="s">{</span> | 
|  | 239  226       <span class="k">push</span> <span class="i">@ElementSymbols</span><span class="cm">,</span> <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">ElementSymbol</span>}<span class="sc">;</span> | 
|  | 240  227     <span class="s">}</span> | 
|  | 241  228   <span class="s">}</span> | 
|  | 242  229   <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="i">@ElementSymbols</span> <span class="co">:</span> \<span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 243  230 <span class="s">}</span> | 
|  | 244  231 | 
|  | 245  232 <span class="c">#</span> | 
|  | 246  233 <span class="c"># Get data for most abundant isotope of an element using element symbol or atomic number.</span> | 
|  | 247  234 <span class="c">#</span> | 
|  | 248 <a name="GetElementMostAbundantNaturalIsotopeData-"></a> 235 <span class="k">sub </span><span class="m">GetElementMostAbundantNaturalIsotopeData</span> <span class="s">{</span> | 
|  | 249  236   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 250  237   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 251  238 | 
|  | 252  239   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 253  240     <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="s">(</span><span class="s">)</span> <span class="co">:</span> <span class="k">undef</span><span class="s">)</span><span class="sc">;</span> | 
|  | 254  241   <span class="s">}</span> | 
|  | 255  242 | 
|  | 256  243   <span class="k">my</span><span class="s">(</span><span class="i">@IsotopeData</span><span class="cm">,</span> <span class="i">$IsotopeSymbol</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="cm">,</span> <span class="i">$RelativeAtomicMass</span><span class="cm">,</span> <span class="i">$NaturalAbundance</span><span class="s">)</span><span class="sc">;</span> | 
|  | 257  244   <span class="i">$MassNumber</span> = <span class="i">$ElementIsotopeDerivedDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">MostAbundantMassNumber</span>}<span class="sc">;</span> | 
|  | 258  245   <span class="i">$IsotopeSymbol</span> = <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">IsotopeSymbol</span>}<span class="sc">;</span> | 
|  | 259  246   <span class="i">$RelativeAtomicMass</span> = <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">RelativeAtomicMass</span>}<span class="sc">;</span> | 
|  | 260  247   <span class="i">$NaturalAbundance</span> = <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">NaturalAbundance</span>}<span class="sc">;</span> | 
|  | 261  248   <span class="i">@IsotopeData</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 262  249   <span class="i">@IsotopeData</span> = <span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$IsotopeSymbol</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="cm">,</span> <span class="i">$RelativeAtomicMass</span><span class="cm">,</span> <span class="i">$NaturalAbundance</span><span class="s">)</span><span class="sc">;</span> | 
|  | 263  250 | 
|  | 264  251   <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="i">@IsotopeData</span> <span class="co">:</span> \<span class="i">@IsotopeData</span><span class="s">)</span><span class="sc">;</span> | 
|  | 265  252 | 
|  | 266  253 <span class="s">}</span> | 
|  | 267  254 <span class="c">#</span> | 
|  | 268  255 <span class="c"># Get natural isotope count for an element...</span> | 
|  | 269  256 <span class="c">#</span> | 
|  | 270 <a name="GetElementNaturalIsotopeCount-"></a> 257 <span class="k">sub </span><span class="m">GetElementNaturalIsotopeCount</span> <span class="s">{</span> | 
|  | 271  258   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 272  259   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 273  260 | 
|  | 274  261   <span class="k">if</span> <span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 275  262     <span class="k">return</span> <span class="i">$ElementIsotopeDerivedDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">IsotopeCount</span>}<span class="sc">;</span> | 
|  | 276  263   <span class="s">}</span> | 
|  | 277  264   <span class="k">else</span> <span class="s">{</span> | 
|  | 278  265     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 279  266   <span class="s">}</span> | 
|  | 280  267 <span class="s">}</span> | 
|  | 281  268 | 
|  | 282  269 <span class="c">#</span> | 
|  | 283  270 <span class="c"># Get all available isotope data for an element using element symbol or atomic number or</span> | 
|  | 284  271 <span class="c"># data for a specific mass number using one of these two invocation methods:</span> | 
|  | 285  272 <span class="c">#</span> | 
|  | 286  273 <span class="c"># $HashRef = GetElementNaturalIsotopesData($ElementID);</span> | 
|  | 287  274 <span class="c">#</span> | 
|  | 288  275 <span class="c"># $HashRef = GetElementNaturalIsotopesData($ElementID, $MassNumber);</span> | 
|  | 289  276 <span class="c">#</span> | 
|  | 290  277 <span class="c"># In the first mode, a reference to a two-dimensional hash array is return where first</span> | 
|  | 291  278 <span class="c"># and second dimension keys correspond to mass number and isotope data labels.</span> | 
|  | 292  279 <span class="c">#</span> | 
|  | 293  280 <span class="c"># And in the second mode, a refernce to one-dimensional hash array is returned with</span> | 
|  | 294  281 <span class="c"># keys and values corresponding to isotope data label and values.</span> | 
|  | 295  282 <span class="c">#</span> | 
|  | 296 <a name="GetElementNaturalIsotopesData-"></a> 283 <span class="k">sub </span><span class="m">GetElementNaturalIsotopesData</span> <span class="s">{</span> | 
|  | 297  284   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="cm">,</span> <span class="i">$InvocationMode</span><span class="cm">,</span> <span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 298  285 | 
|  | 299  286   <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">2</span><span class="s">)</span> <span class="s">{</span> | 
|  | 300  287     <span class="s">(</span><span class="i">$ElementID</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 301  288     <span class="i">$InvocationMode</span> = <span class="n">2</span><span class="sc">;</span> | 
|  | 302  289   <span class="s">}</span> | 
|  | 303  290   <span class="k">else</span> <span class="s">{</span> | 
|  | 304  291     <span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 305  292     <span class="i">$InvocationMode</span> = <span class="n">1</span><span class="sc">;</span> | 
|  | 306  293   <span class="s">}</span> | 
|  | 307  294   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 308  295     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 309  296   <span class="s">}</span> | 
|  | 310  297   <span class="k">if</span> <span class="s">(</span><span class="i">$InvocationMode</span> == <span class="n">1</span><span class="s">)</span> <span class="s">{</span> | 
|  | 311  298     <span class="k">return</span> \<span class="i">%</span>{<span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}}<span class="sc">;</span> | 
|  | 312  299   <span class="s">}</span> | 
|  | 313  300   <span class="k">elsif</span> <span class="s">(</span><span class="i">$InvocationMode</span> == <span class="n">2</span><span class="s">)</span> <span class="s">{</span> | 
|  | 314  301     <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 315  302       <span class="k">return</span> \<span class="i">%</span>{<span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}}<span class="sc">;</span> | 
|  | 316  303     <span class="s">}</span> | 
|  | 317  304     <span class="k">else</span> <span class="s">{</span> | 
|  | 318  305       <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 319  306     <span class="s">}</span> | 
|  | 320  307   <span class="s">}</span> | 
|  | 321  308   <span class="k">else</span> <span class="s">{</span> | 
|  | 322  309     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 323  310   <span class="s">}</span> | 
|  | 324  311 <span class="s">}</span> | 
|  | 325  312 | 
|  | 326  313 <span class="c">#</span> | 
|  | 327  314 <span class="c"># Get relative atomic mass for an element with specfic mass number.</span> | 
|  | 328  315 <span class="c">#</span> | 
|  | 329 <a name="GetElementNaturalIsotopeMass-"></a> 316 <span class="k">sub </span><span class="m">GetElementNaturalIsotopeMass</span> <span class="s">{</span> | 
|  | 330  317   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 331  318   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 332  319 | 
|  | 333  320   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 334  321     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 335  322   <span class="s">}</span> | 
|  | 336  323   <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 337  324     <span class="k">return</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">RelativeAtomicMass</span>}<span class="sc">;</span> | 
|  | 338  325   <span class="s">}</span> | 
|  | 339  326   <span class="k">else</span> <span class="s">{</span> | 
|  | 340  327     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 341  328   <span class="s">}</span> | 
|  | 342  329 <span class="s">}</span> | 
|  | 343  330 | 
|  | 344  331 <span class="c">#</span> | 
|  | 345  332 <span class="c"># Get relative atomic mass of most abundant isotope for an element...</span> | 
|  | 346  333 <span class="c">#</span> | 
|  | 347 <a name="GetElementMostAbundantNaturalIsotopeMass-"></a> 334 <span class="k">sub </span><span class="m">GetElementMostAbundantNaturalIsotopeMass</span> <span class="s">{</span> | 
|  | 348  335   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 349  336   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 350  337 | 
|  | 351  338   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 352  339     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 353  340   <span class="s">}</span> | 
|  | 354  341   <span class="k">my</span><span class="s">(</span><span class="i">$MassNumber</span><span class="cm">,</span> <span class="i">$RelativeAtomicMass</span><span class="s">)</span><span class="sc">;</span> | 
|  | 355  342 | 
|  | 356  343   <span class="i">$MassNumber</span> = <span class="i">$ElementIsotopeDerivedDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">MostAbundantMassNumber</span>}<span class="sc">;</span> | 
|  | 357  344   <span class="i">$RelativeAtomicMass</span> = <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">RelativeAtomicMass</span>}<span class="sc">;</span> | 
|  | 358  345 | 
|  | 359  346   <span class="k">return</span> <span class="i">$RelativeAtomicMass</span><span class="sc">;</span> | 
|  | 360  347 <span class="s">}</span> | 
|  | 361  348 | 
|  | 362  349 <span class="c">#</span> | 
|  | 363  350 <span class="c"># Get mass number of most abundant isotope for an element...</span> | 
|  | 364  351 <span class="c">#</span> | 
|  | 365 <a name="GetElementMostAbundantNaturalIsotopeMassNumber-"></a> 352 <span class="k">sub </span><span class="m">GetElementMostAbundantNaturalIsotopeMassNumber</span> <span class="s">{</span> | 
|  | 366  353   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 367  354   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 368  355 | 
|  | 369  356   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 370  357     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 371  358   <span class="s">}</span> | 
|  | 372  359   <span class="k">my</span><span class="s">(</span><span class="i">$MassNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 373  360 | 
|  | 374  361   <span class="i">$MassNumber</span> = <span class="i">$ElementIsotopeDerivedDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">MostAbundantMassNumber</span>}<span class="sc">;</span> | 
|  | 375  362 | 
|  | 376  363   <span class="k">return</span> <span class="i">$MassNumber</span><span class="sc">;</span> | 
|  | 377  364 <span class="s">}</span> | 
|  | 378  365 <span class="c">#</span> | 
|  | 379  366 <span class="c"># Get % natural abundance of natural isotope for an element with specfic mass number.</span> | 
|  | 380  367 <span class="c">#</span> | 
|  | 381 <a name="GetElementNaturalIsotopeAbundance-"></a> 368 <span class="k">sub </span><span class="m">GetElementNaturalIsotopeAbundance</span> <span class="s">{</span> | 
|  | 382  369   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 383  370   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 384  371 | 
|  | 385  372   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 386  373     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 387  374   <span class="s">}</span> | 
|  | 388  375   <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 389  376     <span class="k">return</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">NaturalAbundance</span>}<span class="sc">;</span> | 
|  | 390  377   <span class="s">}</span> | 
|  | 391  378   <span class="k">else</span> <span class="s">{</span> | 
|  | 392  379     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 393  380   <span class="s">}</span> | 
|  | 394  381 <span class="s">}</span> | 
|  | 395  382 | 
|  | 396  383 <span class="c">#</span> | 
|  | 397  384 <span class="c"># Get all available properties data for an element using element symbol or atomic number.</span> | 
|  | 398  385 <span class="c"># A reference to a hash array is returned with keys and values representing property</span> | 
|  | 399  386 <span class="c"># name and its values respectively.</span> | 
|  | 400  387 <span class="c">#</span> | 
|  | 401 <a name="GetElementPropertiesData-"></a> 388 <span class="k">sub </span><span class="m">GetElementPropertiesData</span> <span class="s">{</span> | 
|  | 402  389   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 403  390   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 404  391 | 
|  | 405  392   <span class="k">if</span> <span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 406  393     <span class="k">return</span> \<span class="i">%</span>{<span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}}<span class="sc">;</span> | 
|  | 407  394   <span class="s">}</span> | 
|  | 408  395   <span class="k">else</span> <span class="s">{</span> | 
|  | 409  396     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 410  397   <span class="s">}</span> | 
|  | 411  398 <span class="s">}</span> | 
|  | 412  399 | 
|  | 413  400 <span class="c">#</span> | 
|  | 414  401 <span class="c"># Get names of all available element properties. A reference to  an array containing</span> | 
|  | 415  402 <span class="c"># names of all available properties is returned.</span> | 
|  | 416  403 <span class="c">#</span> | 
|  | 417 <a name="GetElementPropertiesNames-"></a> 404 <span class="k">sub </span><span class="m">GetElementPropertiesNames</span> <span class="s">{</span> | 
|  | 418  405   <span class="k">my</span><span class="s">(</span><span class="i">$Mode</span><span class="s">)</span><span class="sc">;</span> | 
|  | 419  406   <span class="k">my</span><span class="s">(</span><span class="i">$PropertyName</span><span class="cm">,</span> <span class="i">@PropertyNames</span><span class="s">)</span><span class="sc">;</span> | 
|  | 420  407 | 
|  | 421  408   <span class="i">$Mode</span> = <span class="q">'ByGroup'</span><span class="sc">;</span> | 
|  | 422  409   <span class="k">if</span> <span class="s">(</span><span class="i">@_</span> == <span class="n">1</span><span class="s">)</span> <span class="s">{</span> | 
|  | 423  410     <span class="s">(</span><span class="i">$Mode</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 424  411   <span class="s">}</span> | 
|  | 425  412 | 
|  | 426  413   <span class="i">@PropertyNames</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 427  414   <span class="k">if</span> <span class="s">(</span><span class="i">$Mode</span> =~ <span class="q">/^Alphabetical$/i</span><span class="s">)</span> <span class="s">{</span> | 
|  | 428  415     <span class="c"># AtomicNumber, ElementSymbol and ElementName are always listed first...</span> | 
|  | 429  416     <span class="k">push</span> <span class="i">@PropertyNames</span><span class="cm">,</span> <span class="q">qw(AtomicNumber ElementSymbol ElementName)</span><span class="sc">;</span> | 
|  | 430  417     <span class="k">for</span> <span class="i">$PropertyName</span> <span class="s">(</span><span class="k">sort</span> <span class="k">keys</span> <span class="i">%ElementPropertyNamesMap</span><span class="s">)</span> <span class="s">{</span> | 
|  | 431  418       <span class="k">if</span> <span class="s">(</span><span class="i">$PropertyName</span> !~ <span class="q">/^(AtomicNumber|ElementSymbol|ElementName)$/i</span><span class="s">)</span> <span class="s">{</span> | 
|  | 432  419         <span class="k">push</span> <span class="i">@PropertyNames</span><span class="cm">,</span> <span class="i">$PropertyName</span><span class="sc">;</span> | 
|  | 433  420       <span class="s">}</span> | 
|  | 434  421     <span class="s">}</span> | 
|  | 435  422   <span class="s">}</span> | 
|  | 436  423   <span class="k">else</span> <span class="s">{</span> | 
|  | 437  424     <span class="k">push</span> <span class="i">@PropertyNames</span><span class="cm">,</span> <span class="i">@ElementPropertyNames</span><span class="sc">;</span> | 
|  | 438  425   <span class="s">}</span> | 
|  | 439  426   <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="i">@PropertyNames</span> <span class="co">:</span> \<span class="i">@PropertyNames</span><span class="s">)</span><span class="sc">;</span> | 
|  | 440  427 <span class="s">}</span> | 
|  | 441  428 | 
|  | 442  429 <span class="c">#</span> | 
|  | 443  430 <span class="c"># Get names and units of all available element properties...</span> | 
|  | 444  431 <span class="c"># A reference to a hash array is returned with keys and values representing property</span> | 
|  | 445  432 <span class="c"># name and its units respectively. Names with no units contains empty strings as hash</span> | 
|  | 446  433 <span class="c"># values.</span> | 
|  | 447  434 <span class="c">#</span> | 
|  | 448 <a name="GetElementPropertiesNamesAndUnits-"></a> 435 <span class="k">sub </span><span class="m">GetElementPropertiesNamesAndUnits</span> <span class="s">{</span> | 
|  | 449  436 | 
|  | 450  437    <span class="k">return</span> \<span class="i">%ElementPropertyNamesMap</span><span class="sc">;</span> | 
|  | 451  438 <span class="s">}</span> | 
|  | 452  439 | 
|  | 453  440 <span class="c">#</span> | 
|  | 454  441 <span class="c"># Get units for a specific element property. An empty string is returned for a property</span> | 
|  | 455  442 <span class="c"># with no units.</span> | 
|  | 456  443 <span class="c">#</span> | 
|  | 457 <a name="GetElementPropertyUnits-"></a> 444 <span class="k">sub </span><span class="m">GetElementPropertyUnits</span> <span class="s">{</span> | 
|  | 458  445   <span class="k">my</span><span class="s">(</span><span class="i">$PropertyName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 459  446   <span class="k">my</span><span class="s">(</span><span class="i">$PropertyUnits</span><span class="s">)</span><span class="sc">;</span> | 
|  | 460  447 | 
|  | 461  448   <span class="i">$PropertyUnits</span> = <span class="s">(</span><span class="k">exists</span><span class="s">(</span><span class="i">$ElementPropertyNamesMap</span>{<span class="i">$PropertyName</span>}<span class="s">)</span><span class="s">)</span> ? <span class="i">$ElementPropertyNamesMap</span>{<span class="i">$PropertyName</span>} <span class="co">:</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 462  449 | 
|  | 463  450   <span class="k">return</span> <span class="i">$PropertyUnits</span><span class="sc">;</span> | 
|  | 464  451 <span class="s">}</span> | 
|  | 465  452 | 
|  | 466  453 <span class="c">#</span> | 
|  | 467  454 <span class="c"># Is it a known element? Input is either an element symol or a atomic number.</span> | 
|  | 468  455 <span class="c">#</span> | 
|  | 469 <a name="IsElement-"></a> 456 <span class="k">sub </span><span class="m">IsElement</span> <span class="s">{</span> | 
|  | 470  457   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 471  458   <span class="k">my</span><span class="s">(</span><span class="i">$Status</span><span class="s">)</span><span class="sc">;</span> | 
|  | 472  459 | 
|  | 473  460   <span class="i">$Status</span> = <span class="s">(</span><span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span> ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span> | 
|  | 474  461 | 
|  | 475  462   <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | 
|  | 476  463 <span class="s">}</span> | 
|  | 477  464 | 
|  | 478  465 <span class="c">#</span> | 
|  | 479  466 <span class="c"># Is it a valid mass number for an element? Element ID is either an element symol or a atomic number.</span> | 
|  | 480  467 <span class="c">#</span> | 
|  | 481 <a name="IsElementNaturalIsotopeMassNumber-"></a> 468 <span class="k">sub </span><span class="m">IsElementNaturalIsotopeMassNumber</span> <span class="s">{</span> | 
|  | 482  469   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 483  470   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$Status</span><span class="s">)</span><span class="sc">;</span> | 
|  | 484  471 | 
|  | 485  472   <span class="i">$Status</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 486  473   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 487  474     <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | 
|  | 488  475   <span class="s">}</span> | 
|  | 489  476   <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 490  477     <span class="i">$Status</span> = <span class="n">1</span><span class="sc">;</span> | 
|  | 491  478   <span class="s">}</span> | 
|  | 492  479 | 
|  | 493  480   <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | 
|  | 494  481 <span class="s">}</span> | 
|  | 495  482 | 
|  | 496  483 <span class="c">#</span> | 
|  | 497  484 <span class="c"># Is it an available element property?</span> | 
|  | 498  485 <span class="c">#</span> | 
|  | 499 <a name="IsElementProperty-"></a> 486 <span class="k">sub </span><span class="m">IsElementProperty</span> <span class="s">{</span> | 
|  | 500  487   <span class="k">my</span><span class="s">(</span><span class="i">$PropertyName</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 501  488   <span class="k">my</span><span class="s">(</span><span class="i">$Status</span><span class="s">)</span><span class="sc">;</span> | 
|  | 502  489 | 
|  | 503  490   <span class="i">$Status</span> = <span class="s">(</span><span class="k">exists</span><span class="s">(</span><span class="i">$ElementPropertyNamesMap</span>{<span class="i">$PropertyName</span>}<span class="s">)</span><span class="s">)</span> ? <span class="n">1</span> <span class="co">:</span> <span class="n">0</span><span class="sc">;</span> | 
|  | 504  491 | 
|  | 505  492   <span class="k">return</span> <span class="i">$Status</span><span class="sc">;</span> | 
|  | 506  493 <span class="s">}</span> | 
|  | 507  494 | 
|  | 508  495 <span class="c">#</span> | 
|  | 509  496 <span class="c"># Implents GetElement<PropertyName> for a valid proprty name.</span> | 
|  | 510  497 <span class="c">#</span> | 
|  | 511 <a name="AUTOLOAD-"></a> 498 <span class="k">sub </span><span class="m">AUTOLOAD</span> <span class="s">{</span> | 
|  | 512  499   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 513  500   <span class="k">my</span><span class="s">(</span><span class="i">$FunctionName</span><span class="cm">,</span> <span class="i">$PropertyName</span><span class="cm">,</span> <span class="i">$PropertyValue</span><span class="cm">,</span> <span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 514  501 | 
|  | 515  502   <span class="i">$PropertyValue</span> = <span class="k">undef</span><span class="sc">;</span> | 
|  | 516  503 | 
|  | 517  504   <span class="k">use</span> <span class="w">vars</span> <span class="q">qw($AUTOLOAD)</span><span class="sc">;</span> | 
|  | 518  505   <span class="i">$FunctionName</span> = <span class="i">$AUTOLOAD</span><span class="sc">;</span> | 
|  | 519  506   <span class="i">$FunctionName</span> =~ <span class="q">s/.*:://</span><span class="sc">;</span> | 
|  | 520  507 | 
|  | 521  508   <span class="c"># Only Get<PropertyName> functions are supported...</span> | 
|  | 522  509   <span class="k">if</span> <span class="s">(</span><span class="i">$FunctionName</span> !~ <span class="q">/^GetElement/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 523  510     <span class="w">croak</span> <span class="q">"Error: Function, PeriodicTable::$FunctionName, is not supported by AUTOLOAD in PeriodicTable module: Only GetElement<PropertyName> functions are implemented..."</span><span class="sc">;</span> | 
|  | 524  511   <span class="s">}</span> | 
|  | 525  512 | 
|  | 526  513   <span class="i">$PropertyName</span> = <span class="i">$FunctionName</span><span class="sc">;</span> | 
|  | 527  514   <span class="i">$PropertyName</span> =~  <span class="q">s/^GetElement//</span><span class="sc">;</span> | 
|  | 528  515   <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$ElementPropertyNamesMap</span>{<span class="i">$PropertyName</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 529  516     <span class="w">croak</span> <span class="q">"Error: Function, PeriodicTable::$FunctionName, is not supported by AUTOLOAD in PeriodicTable module: Unknown element property name, $PropertyName, specified..."</span><span class="sc">;</span> | 
|  | 530  517   <span class="s">}</span> | 
|  | 531  518 | 
|  | 532  519   <span class="k">if</span> <span class="s">(</span>!<span class="s">(</span><span class="i">$AtomicNumber</span> = <span class="i">_ValidateElementID</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 533  520     <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 534  521   <span class="s">}</span> | 
|  | 535  522   <span class="i">$PropertyValue</span> = <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$PropertyName</span>}<span class="sc">;</span> | 
|  | 536  523   <span class="k">return</span> <span class="i">$PropertyValue</span><span class="sc">;</span> | 
|  | 537  524 <span class="s">}</span> | 
|  | 538  525 | 
|  | 539  526 <span class="c">#</span> | 
|  | 540  527 <span class="c"># Get elements labels for group name specified using American or European style...</span> | 
|  | 541  528 <span class="c">#</span> | 
|  | 542 <a name="_GetElementsByGroupLabel-"></a> 529 <span class="k">sub </span><span class="m">_GetElementsByGroupLabel</span> <span class="s">{</span> | 
|  | 543  530   <span class="k">my</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="cm">,</span> <span class="i">$LabelStyle</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 544  531   <span class="k">my</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 545  532 | 
|  | 546  533   <span class="k">if</span> <span class="s">(</span><span class="i">$LabelStyle</span> =~ <span class="q">/^AmericanStyle$/i</span><span class="s">)</span> <span class="s">{</span> | 
|  | 547  534     <span class="i">$GroupNumber</span> = <span class="i">GetIUPACGroupNumberFromAmericanStyleGroupLabel</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span><span class="sc">;</span> | 
|  | 548  535   <span class="s">}</span> | 
|  | 549  536   <span class="k">elsif</span> <span class="s">(</span><span class="i">$LabelStyle</span> =~ <span class="q">/^EuropeanStyle$/i</span><span class="s">)</span> <span class="s">{</span> | 
|  | 550  537     <span class="i">$GroupNumber</span> = <span class="i">GetIUPACGroupNumberFromEuropeanStyleGroupLabel</span><span class="s">(</span><span class="i">$GroupLabel</span><span class="s">)</span><span class="sc">;</span> | 
|  | 551  538   <span class="s">}</span> | 
|  | 552  539 | 
|  | 553  540   <span class="k">if</span> <span class="s">(</span><span class="i">IsEmpty</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 554  541     <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="s">(</span><span class="s">)</span> <span class="co">:</span> <span class="k">undef</span><span class="s">)</span><span class="sc">;</span> | 
|  | 555  542   <span class="s">}</span> | 
|  | 556  543 | 
|  | 557  544   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">@GroupElements</span><span class="cm">,</span> <span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 558  545   <span class="i">@ElementSymbols</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 559  546   <span class="k">if</span> <span class="s">(</span><span class="i">$GroupNumber</span> =~ <span class="q">/\,/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 560  547     <span class="k">my</span><span class="s">(</span><span class="i">@GroupNumbers</span><span class="s">)</span><span class="sc">;</span> | 
|  | 561  548 | 
|  | 562  549     <span class="i">@GroupNumbers</span> = <span class="k">split</span> <span class="q">/\,/</span><span class="cm">,</span> <span class="i">$GroupNumber</span><span class="sc">;</span> | 
|  | 563  550     <span class="k">for</span> <span class="i">$GroupNumber</span> <span class="s">(</span><span class="i">@GroupNumbers</span><span class="s">)</span> <span class="s">{</span> | 
|  | 564  551       <span class="i">@GroupElements</span> =  <span class="i">GetElementsByGroupNumber</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 565  552       <span class="k">push</span> <span class="i">@ElementSymbols</span><span class="cm">,</span> <span class="i">@GroupElements</span><span class="sc">;</span> | 
|  | 566  553     <span class="s">}</span> | 
|  | 567  554   <span class="s">}</span> | 
|  | 568  555   <span class="k">else</span> <span class="s">{</span> | 
|  | 569  556     <span class="i">@GroupElements</span> =  <span class="i">GetElementsByGroupNumber</span><span class="s">(</span><span class="i">$GroupNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 570  557     <span class="k">push</span> <span class="i">@ElementSymbols</span><span class="cm">,</span> <span class="i">@GroupElements</span><span class="sc">;</span> | 
|  | 571  558   <span class="s">}</span> | 
|  | 572  559   <span class="k">return</span> <span class="s">(</span><span class="k">wantarray</span> ? <span class="i">@ElementSymbols</span> <span class="co">:</span> \<span class="i">@ElementSymbols</span><span class="s">)</span><span class="sc">;</span> | 
|  | 573  560 <span class="s">}</span> | 
|  | 574  561 | 
|  | 575  562 <span class="c">#</span> | 
|  | 576  563 <span class="c"># Load PeriodicTableElementData.csv and PeriodicTableIsotopeData.csv files from</span> | 
|  | 577  564 <span class="c"># <MayaChemTools>/lib directory...</span> | 
|  | 578  565 <span class="c">#</span> | 
|  | 579 <a name="_LoadPeriodicTableElementData-"></a> 566 <span class="k">sub </span><span class="m">_LoadPeriodicTableElementData</span> <span class="s">{</span> | 
|  | 580  567   <span class="k">my</span><span class="s">(</span><span class="i">$ElementDataFile</span><span class="cm">,</span> <span class="i">$ElementIsotopeDataFile</span><span class="cm">,</span> <span class="i">$MayaChemToolsLibDir</span><span class="s">)</span><span class="sc">;</span> | 
|  | 581  568 | 
|  | 582  569   <span class="i">$MayaChemToolsLibDir</span> = <span class="i">GetMayaChemToolsLibDirName</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 583  570 | 
|  | 584  571   <span class="i">$ElementDataFile</span> =  <span class="q">"$MayaChemToolsLibDir"</span> . <span class="q">"/data/PeriodicTableElementData.csv"</span><span class="sc">;</span> | 
|  | 585  572   <span class="i">$ElementIsotopeDataFile</span> = <span class="q">"$MayaChemToolsLibDir"</span> . <span class="q">"/data/PeriodicTableIsotopeData.csv"</span><span class="sc">;</span> | 
|  | 586  573 | 
|  | 587  574   <span class="k">if</span> <span class="s">(</span>! <span class="k">-e</span> <span class="q">"$ElementDataFile"</span><span class="s">)</span> <span class="s">{</span> | 
|  | 588  575     <span class="w">croak</span> <span class="q">"Error: MayaChemTools package file, $ElementDataFile, is missing: Possible installation problems..."</span><span class="sc">;</span> | 
|  | 589  576   <span class="s">}</span> | 
|  | 590  577   <span class="k">if</span> <span class="s">(</span>! <span class="k">-e</span> <span class="q">"$ElementIsotopeDataFile"</span><span class="s">)</span> <span class="s">{</span> | 
|  | 591  578     <span class="w">croak</span> <span class="q">"Error: MayaChemTools package file, $ElementIsotopeDataFile, is missing: Possible installation problems..."</span><span class="sc">;</span> | 
|  | 592  579   <span class="s">}</span> | 
|  | 593  580 | 
|  | 594  581   <span class="i">_LoadElementData</span><span class="s">(</span><span class="i">$ElementDataFile</span><span class="s">)</span><span class="sc">;</span> | 
|  | 595  582   <span class="i">_LoadElementIsotopeData</span><span class="s">(</span><span class="i">$ElementIsotopeDataFile</span><span class="s">)</span><span class="sc">;</span> | 
|  | 596  583 <span class="s">}</span> | 
|  | 597  584 | 
|  | 598  585 <span class="c">#</span> | 
|  | 599  586 <span class="c"># Load PeriodicTableElementData.csv file from <MayaChemTools>/lib directory...</span> | 
|  | 600  587 <span class="c">#</span> | 
|  | 601 <a name="_LoadElementData-"></a> 588 <span class="k">sub </span><span class="m">_LoadElementData</span> <span class="s">{</span> | 
|  | 602  589   <span class="k">my</span><span class="s">(</span><span class="i">$ElementDataFile</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 603  590 | 
|  | 604  591   <span class="i">%ElementDataMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 605  592   <span class="i">@ElementPropertyNames</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 606  593   <span class="i">%ElementPropertyNamesMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 607  594   <span class="i">%ElementSymbolMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 608  595 | 
|  | 609  596   <span class="c"># Load atomic properties data for all elements...</span> | 
|  | 610  597   <span class="c">#</span> | 
|  | 611  598   <span class="c"># File Format:</span> | 
|  | 612  599   <span class="c">#"AtomicNumber","ElementSymbol","ElementName","AtomicWeight","GroupNumber","GroupName","PeriodNumber","Block","GroundStateConfiguration","ValenceElectrons","GroundStateLevel","StandardState","CommonValences","LowestCommonValence","HighestCommonValence","CommonOxidationNumbers","LowestCommonOxidationNumber","HighestCommonOxidationNumber","BondLength(pm)","AtomicRadiusEmpirical(pm)","AtomicRadiusCalculated(pm)","CovalentRadiusEmpirical(pm)","VanderWaalsRadius(pm)","ElectronAffinity(kJ mol-1)","FirstIonizationEnergy(kJ mol-1)","PaulingElectronegativity(Pauling units)","SandersonElectronegativity(Pauling units)","AllredRochowElectronegativity(Pauling units)","MullikenJaffeElectronegativity(Pauling units)","AllenElectronegativity(Pauling units)","DensityOfSolid(kg m-3)","MolarVolume(cm3)","VelocityOfSound(m s-1)","YoungsModulus(GPa)","RigidityModulus(GPa)","BulkModulus(GPa)","PoissonsRatio(No units)","MineralHardness(No units)","BrinellHardness(MN m-2)","VickersHardness(MN m-2)","ElectricalResistivity(10-8 omega m)","Reflectivity(%)","RefractiveIndex(No units)","MeltingPoint(Celsius)","BoilingPoint(Celsius)","CriticalTemperature(Celsius)","SuperconductionTemperature(Celsius)","ThermalConductivity(W m-1 K-1)","CoefficientOfLinearExpansion(K-1 x 10^6)","EnthalpyOfFusion(kJ mol-1)","EnthalpyOfVaporization(kJ mol-1)","EnthalpyOfAtmization(kJ mol-1)","Color","Classification","DiscoveredBy","DiscoveredAt","DiscoveredWhen","OriginOfName"</span> | 
|  | 613  600   <span class="c">#</span> | 
|  | 614  601   <span class="c">#</span> | 
|  | 615  602   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$ElementSymbol</span><span class="cm">,</span> <span class="i">$Line</span><span class="cm">,</span> <span class="i">$NumOfCols</span><span class="cm">,</span> <span class="i">$InDelim</span><span class="cm">,</span> <span class="i">$Index</span><span class="cm">,</span> <span class="i">$Name</span><span class="cm">,</span> <span class="i">$Value</span><span class="cm">,</span> <span class="i">$Units</span><span class="cm">,</span> <span class="i">@LineWords</span><span class="cm">,</span> <span class="i">@ColLabels</span><span class="s">)</span><span class="sc">;</span> | 
|  | 616  603 | 
|  | 617  604   <span class="i">$InDelim</span> = <span class="q">"\,"</span><span class="sc">;</span> | 
|  | 618  605   <span class="k">open</span> <span class="w">ELEMENTDATAFILE</span><span class="cm">,</span> <span class="q">"$ElementDataFile"</span> <span class="k">or</span> <span class="w">croak</span> <span class="q">"Couldn't open $ElementDataFile: $! ..."</span><span class="sc">;</span> | 
|  | 619  606 | 
|  | 620  607   <span class="c"># Skip lines up to column labels...</span> | 
|  | 621  608   <span class="j">LINE:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$Line</span> = <span class="i">GetTextLine</span><span class="s">(</span>\<span class="i">*ELEMENTDATAFILE</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 622  609     <span class="k">if</span> <span class="s">(</span><span class="i">$Line</span> !~ <span class="q">/^#/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 623  610       <span class="k">last</span> <span class="j">LINE</span><span class="sc">;</span> | 
|  | 624  611     <span class="s">}</span> | 
|  | 625  612   <span class="s">}</span> | 
|  | 626  613   <span class="i">@ColLabels</span>= <span class="i">quotewords</span><span class="s">(</span><span class="i">$InDelim</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="i">$Line</span><span class="s">)</span><span class="sc">;</span> | 
|  | 627  614   <span class="i">$NumOfCols</span> = <span class="i">@ColLabels</span><span class="sc">;</span> | 
|  | 628  615 | 
|  | 629  616   <span class="c"># Extract property names from column labels - and unit names where appropriate...</span> | 
|  | 630  617   <span class="i">@ElementPropertyNames</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 631  618   <span class="k">for</span> <span class="i">$Index</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$#ColLabels</span><span class="s">)</span> <span class="s">{</span> | 
|  | 632  619     <span class="i">$Name</span> = <span class="i">$ColLabels</span>[<span class="i">$Index</span>]<span class="sc">;</span> | 
|  | 633  620     <span class="i">$Units</span> = <span class="q">""</span><span class="sc">;</span> | 
|  | 634  621     <span class="k">if</span> <span class="s">(</span><span class="i">$Name</span> =~ <span class="q">/\(/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 635  622       <span class="s">(</span><span class="i">$Name</span><span class="cm">,</span> <span class="i">$Units</span><span class="s">)</span> = <span class="k">split</span> <span class="q">/\(/</span><span class="cm">,</span>  <span class="i">$Name</span><span class="sc">;</span> | 
|  | 636  623       <span class="i">$Units</span> =~ <span class="q">s/\)//g</span><span class="sc">;</span> | 
|  | 637  624     <span class="s">}</span> | 
|  | 638  625     <span class="k">push</span> <span class="i">@ElementPropertyNames</span><span class="cm">,</span> <span class="i">$Name</span><span class="sc">;</span> | 
|  | 639  626 | 
|  | 640  627     <span class="c"># Store element names and units...</span> | 
|  | 641  628     <span class="i">$ElementPropertyNamesMap</span>{<span class="i">$Name</span>} = <span class="i">$Units</span><span class="sc">;</span> | 
|  | 642  629   <span class="s">}</span> | 
|  | 643  630 | 
|  | 644  631   <span class="c"># Process element data...</span> | 
|  | 645  632   <span class="j">LINE:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$Line</span> = <span class="i">GetTextLine</span><span class="s">(</span>\<span class="i">*ELEMENTDATAFILE</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 646  633     <span class="k">if</span> <span class="s">(</span><span class="i">$Line</span> =~ <span class="q">/^#/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 647  634       <span class="k">next</span> <span class="j">LINE</span><span class="sc">;</span> | 
|  | 648  635     <span class="s">}</span> | 
|  | 649  636     <span class="i">@LineWords</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 650  637     <span class="i">@LineWords</span> = <span class="i">quotewords</span><span class="s">(</span><span class="i">$InDelim</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="i">$Line</span><span class="s">)</span><span class="sc">;</span> | 
|  | 651  638     <span class="k">if</span> <span class="s">(</span><span class="i">@LineWords</span> != <span class="i">$NumOfCols</span><span class="s">)</span> <span class="s">{</span> | 
|  | 652  639       <span class="w">croak</span> <span class="q">"Error: The number of data fields, @LineWords, in $ElementDataFile must be $NumOfCols.\nLine: $Line..."</span><span class="sc">;</span> | 
|  | 653  640     <span class="s">}</span> | 
|  | 654  641     <span class="i">$AtomicNumber</span> = <span class="i">$LineWords</span>[<span class="n">0</span>]<span class="sc">;</span> <span class="i">$ElementSymbol</span> = <span class="i">$LineWords</span>[<span class="n">1</span>]<span class="sc">;</span> | 
|  | 655  642     <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 656  643       <span class="w">carp</span> <span class="q">"Warning: Ignoring data for element $ElementSymbol: It has already been loaded.\nLine: $Line...."</span><span class="sc">;</span> | 
|  | 657  644       <span class="k">next</span> <span class="j">LINE</span><span class="sc">;</span> | 
|  | 658  645     <span class="s">}</span> | 
|  | 659  646 | 
|  | 660  647     <span class="c"># Store all the values...</span> | 
|  | 661  648     <span class="i">%</span>{<span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 662  649     <span class="k">for</span> <span class="i">$Index</span> <span class="s">(</span><span class="n">0</span> .. <span class="i">$#LineWords</span><span class="s">)</span> <span class="s">{</span> | 
|  | 663  650       <span class="i">$Name</span> = <span class="i">$ElementPropertyNames</span>[<span class="i">$Index</span>]<span class="sc">;</span> | 
|  | 664  651       <span class="i">$Value</span> = <span class="i">$LineWords</span>[<span class="i">$Index</span>]<span class="sc">;</span> | 
|  | 665  652       <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$Name</span>} = <span class="i">$Value</span><span class="sc">;</span> | 
|  | 666  653     <span class="s">}</span> | 
|  | 667  654   <span class="s">}</span> | 
|  | 668  655   <span class="k">close</span> <span class="w">ELEMENTDATAFILE</span><span class="sc">;</span> | 
|  | 669  656 | 
|  | 670  657   <span class="c"># Setup the element symbol map as well...</span> | 
|  | 671  658   <span class="i">_SetupElementSymbolMap</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 672  659 <span class="s">}</span> | 
|  | 673  660 | 
|  | 674  661 <span class="c">#</span> | 
|  | 675  662 <span class="c"># Load PeriodicTableIsotopeData.csv files from <MayaChemTools>/lib directory...</span> | 
|  | 676  663 <span class="c">#</span> | 
|  | 677 <a name="_LoadElementIsotopeData-"></a> 664 <span class="k">sub </span><span class="m">_LoadElementIsotopeData</span> <span class="s">{</span> | 
|  | 678  665   <span class="k">my</span><span class="s">(</span><span class="i">$ElementIsotopeDataFile</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 679  666 | 
|  | 680  667   <span class="i">%ElementIsotopeDataMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 681  668   <span class="i">%ElementIsotopeDerivedDataMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 682  669 | 
|  | 683  670   <span class="c"># Load isotope data for all elements...</span> | 
|  | 684  671   <span class="c">#</span> | 
|  | 685  672   <span class="c"># File format:</span> | 
|  | 686  673   <span class="c"># "Atomic Number","Isotope Symbol","Mass Number","Relative Atomic Mass","% Natural Abundnace"</span> | 
|  | 687  674   <span class="c">#</span> | 
|  | 688  675   <span class="c"># Empty values for "Relative Atomic Mass" and "% Natural Abundnace" imply absence of any</span> | 
|  | 689  676   <span class="c"># naturally occuring isotopes for the element.</span> | 
|  | 690  677   <span class="c">#</span> | 
|  | 691  678   <span class="k">my</span><span class="s">(</span><span class="i">$InDelim</span><span class="cm">,</span> <span class="i">$Line</span><span class="cm">,</span> <span class="i">$NumOfCols</span><span class="cm">,</span> <span class="i">@ColLabels</span><span class="cm">,</span> <span class="i">@LineWords</span><span class="s">)</span><span class="sc">;</span> | 
|  | 692  679 | 
|  | 693  680   <span class="i">$InDelim</span> = <span class="q">"\,"</span><span class="sc">;</span> | 
|  | 694  681   <span class="k">open</span> <span class="w">ISOTOPEDATAFILE</span><span class="cm">,</span> <span class="q">"$ElementIsotopeDataFile"</span> <span class="k">or</span> <span class="w">croak</span> <span class="q">"Couldn't open $ElementIsotopeDataFile: $! ..."</span><span class="sc">;</span> | 
|  | 695  682 | 
|  | 696  683   <span class="c"># Skip lines up to column labels...</span> | 
|  | 697  684   <span class="j">LINE:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$Line</span> = <span class="i">GetTextLine</span><span class="s">(</span>\<span class="i">*ISOTOPEDATAFILE</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 698  685     <span class="k">if</span> <span class="s">(</span><span class="i">$Line</span> !~ <span class="q">/^#/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 699  686       <span class="k">last</span> <span class="j">LINE</span><span class="sc">;</span> | 
|  | 700  687     <span class="s">}</span> | 
|  | 701  688   <span class="s">}</span> | 
|  | 702  689   <span class="i">@ColLabels</span>= <span class="i">quotewords</span><span class="s">(</span><span class="i">$InDelim</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="i">$Line</span><span class="s">)</span><span class="sc">;</span> | 
|  | 703  690   <span class="i">$NumOfCols</span> = <span class="i">@ColLabels</span><span class="sc">;</span> | 
|  | 704  691 | 
|  | 705  692   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$IsotopeSymbol</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="cm">,</span> <span class="i">$RelativeAtomicMass</span><span class="cm">,</span> <span class="i">$NaturalAbundance</span><span class="cm">,</span> <span class="i">%ZeroNaturalAbundanceMap</span><span class="s">)</span><span class="sc">;</span> | 
|  | 706  693   <span class="i">%ZeroNaturalAbundanceMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 707  694 | 
|  | 708  695   <span class="c"># Process element data...</span> | 
|  | 709  696   <span class="j">LINE:</span> <span class="k">while</span> <span class="s">(</span><span class="i">$Line</span> = <span class="i">GetTextLine</span><span class="s">(</span>\<span class="i">*ISOTOPEDATAFILE</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 710  697     <span class="k">if</span> <span class="s">(</span><span class="i">$Line</span> =~ <span class="q">/^#/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 711  698       <span class="k">next</span> <span class="j">LINE</span><span class="sc">;</span> | 
|  | 712  699     <span class="s">}</span> | 
|  | 713  700     <span class="i">@LineWords</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 714  701     <span class="i">@LineWords</span> = <span class="i">quotewords</span><span class="s">(</span><span class="i">$InDelim</span><span class="cm">,</span> <span class="n">0</span><span class="cm">,</span> <span class="i">$Line</span><span class="s">)</span><span class="sc">;</span> | 
|  | 715  702     <span class="k">if</span> <span class="s">(</span><span class="i">@LineWords</span> != <span class="i">$NumOfCols</span><span class="s">)</span> <span class="s">{</span> | 
|  | 716  703       <span class="w">croak</span> <span class="q">"Error: The number of data fields, @LineWords, in $ElementIsotopeDataFile must be $NumOfCols.\nLine: $Line..."</span><span class="sc">;</span> | 
|  | 717  704     <span class="s">}</span> | 
|  | 718  705     <span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$IsotopeSymbol</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="cm">,</span> <span class="i">$RelativeAtomicMass</span><span class="cm">,</span> <span class="i">$NaturalAbundance</span><span class="s">)</span> = <span class="i">@LineWords</span><span class="sc">;</span> | 
|  | 719  706     <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ZeroNaturalAbundanceMap</span>{<span class="i">$AtomicNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 720  707       <span class="c"># Only one isotope data line allowed for elements with no natural isotopes...</span> | 
|  | 721  708       <span class="w">carp</span> <span class="q">"Warning: Ignoring isotope data for element with atomic number $AtomicNumber: Only one data line allowed for an element with no natural isotopes.\nLine: $Line..."</span><span class="sc">;</span> | 
|  | 722  709       <span class="k">next</span> <span class="j">LINE</span><span class="sc">;</span> | 
|  | 723  710     <span class="s">}</span> | 
|  | 724  711     <span class="k">if</span> <span class="s">(</span><span class="i">IsEmpty</span><span class="s">(</span><span class="i">$NaturalAbundance</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 725  712       <span class="i">$RelativeAtomicMass</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 726  713       <span class="i">$NaturalAbundance</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 727  714       <span class="i">$ZeroNaturalAbundanceMap</span>{<span class="i">$AtomicNumber</span>} = <span class="n">1</span><span class="sc">;</span> | 
|  | 728  715     <span class="s">}</span> | 
|  | 729  716     <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 730  717       <span class="c"># Additional data for an existing element...</span> | 
|  | 731  718       <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 732  719         <span class="w">carp</span> <span class="q">"Warning: Ignoring isotope data for element with atomic number $AtomicNumber: It has already been loaded.\nLine: $Line..."</span><span class="sc">;</span> | 
|  | 733  720         <span class="k">next</span> <span class="j">LINE</span><span class="sc">;</span> | 
|  | 734  721       <span class="s">}</span> | 
|  | 735  722     <span class="s">}</span> | 
|  | 736  723     <span class="k">else</span> <span class="s">{</span> | 
|  | 737  724       <span class="c"># Data for a new element...</span> | 
|  | 738  725       <span class="i">%</span>{<span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 739  726     <span class="s">}</span> | 
|  | 740  727     <span class="i">%</span>{<span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 741  728     <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">IsotopeSymbol</span>} = <span class="i">$IsotopeSymbol</span><span class="sc">;</span> | 
|  | 742  729     <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">RelativeAtomicMass</span>} = <span class="i">$RelativeAtomicMass</span><span class="sc">;</span> | 
|  | 743  730     <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">NaturalAbundance</span>} = <span class="i">$NaturalAbundance</span><span class="sc">;</span> | 
|  | 744  731   <span class="s">}</span> | 
|  | 745  732   <span class="k">close</span> <span class="w">ISOTOPEDATAFILE</span><span class="sc">;</span> | 
|  | 746  733 | 
|  | 747  734   <span class="i">_SetupElementIsotopeDerivedDataMap</span><span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 748  735 <span class="s">}</span> | 
|  | 749  736 | 
|  | 750  737 <span class="c">#</span> | 
|  | 751  738 <span class="c"># Map mass number of most abundant isotope for each element; additionally,</span> | 
|  | 752  739 <span class="c"># count number of isotopes as well.</span> | 
|  | 753  740 <span class="c">#</span> | 
|  | 754 <a name="_SetupElementIsotopeDerivedDataMap-"></a> 741 <span class="k">sub </span><span class="m">_SetupElementIsotopeDerivedDataMap</span> <span class="s">{</span> | 
|  | 755  742   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$MassNumber</span><span class="cm">,</span> <span class="i">$NaturalAbundance</span><span class="cm">,</span> <span class="i">$MostNaturalAbundance</span><span class="cm">,</span> <span class="i">$MostAbundantMassNumber</span><span class="cm">,</span> <span class="i">$IsotopeCount</span><span class="s">)</span><span class="sc">;</span> | 
|  | 756  743 | 
|  | 757  744   <span class="i">%ElementIsotopeDerivedDataMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 758  745 | 
|  | 759  746   <span class="k">for</span> <span class="i">$AtomicNumber</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span><span class="i">$a</span> <=> <span class="i">$b</span><span class="s">}</span> <span class="k">keys</span> <span class="i">%ElementIsotopeDataMap</span><span class="s">)</span> <span class="s">{</span> | 
|  | 760  747     <span class="i">$IsotopeCount</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 761  748     <span class="i">$MostAbundantMassNumber</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 762  749     <span class="i">$MostNaturalAbundance</span> = <span class="n">0</span><span class="sc">;</span> | 
|  | 763  750     <span class="j">MASSNUMBER:</span> <span class="k">for</span> <span class="i">$MassNumber</span> <span class="s">(</span><span class="k">sort</span> <span class="s">{</span><span class="i">$a</span> <=> <span class="i">$b</span><span class="s">}</span> <span class="k">keys</span> <span class="i">%</span>{<span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}}<span class="s">)</span> <span class="s">{</span> | 
|  | 764  751       <span class="i">$NaturalAbundance</span> = <span class="i">$ElementIsotopeDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="i">$MassNumber</span>}{<span class="w">NaturalAbundance</span>}<span class="sc">;</span> | 
|  | 765  752       <span class="k">if</span> <span class="s">(</span><span class="i">IsEmpty</span><span class="s">(</span><span class="i">$NaturalAbundance</span><span class="s">)</span><span class="s">)</span> <span class="s">{</span> | 
|  | 766  753         <span class="c"># No natural isotopes available...</span> | 
|  | 767  754         <span class="i">$MostAbundantMassNumber</span> = <span class="i">$MassNumber</span><span class="sc">;</span> | 
|  | 768  755         <span class="k">last</span> <span class="j">MASSNUMBER</span><span class="sc">;</span> | 
|  | 769  756       <span class="s">}</span> | 
|  | 770  757       <span class="k">if</span> <span class="s">(</span><span class="i">$NaturalAbundance</span> == <span class="n">0</span><span class="s">)</span> <span class="s">{</span> | 
|  | 771  758         <span class="c"># Not a natural isotope; Listed in periodic table data file to support non-natural</span> | 
|  | 772  759         <span class="c"># elements such as T. It's not included in natural isotope count...</span> | 
|  | 773  760         <span class="k">next</span> <span class="j">MASSNUMBER</span><span class="sc">;</span> | 
|  | 774  761       <span class="s">}</span> | 
|  | 775  762       <span class="i">$IsotopeCount</span>++<span class="sc">;</span> | 
|  | 776  763       <span class="k">if</span> <span class="s">(</span><span class="i">$NaturalAbundance</span> > <span class="i">$MostNaturalAbundance</span><span class="s">)</span> <span class="s">{</span> | 
|  | 777  764         <span class="i">$MostAbundantMassNumber</span> = <span class="i">$MassNumber</span><span class="sc">;</span> | 
|  | 778  765         <span class="i">$MostNaturalAbundance</span> = <span class="i">$NaturalAbundance</span><span class="sc">;</span> | 
|  | 779  766       <span class="s">}</span> | 
|  | 780  767     <span class="s">}</span> | 
|  | 781  768     <span class="i">%</span>{<span class="i">$ElementIsotopeDerivedDataMap</span>{<span class="i">$AtomicNumber</span>}} = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 782  769     <span class="i">$ElementIsotopeDerivedDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">IsotopeCount</span>} = <span class="i">$IsotopeCount</span><span class="sc">;</span> | 
|  | 783  770     <span class="i">$ElementIsotopeDerivedDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">MostAbundantMassNumber</span>} = <span class="i">$MostAbundantMassNumber</span><span class="sc">;</span> | 
|  | 784  771   <span class="s">}</span> | 
|  | 785  772 <span class="s">}</span> | 
|  | 786  773 | 
|  | 787  774 <span class="c">#</span> | 
|  | 788  775 <span class="c"># Setup element symbol map...</span> | 
|  | 789  776 <span class="c">#</span> | 
|  | 790 <a name="_SetupElementSymbolMap-"></a> 777 <span class="k">sub </span><span class="m">_SetupElementSymbolMap</span> <span class="s">{</span> | 
|  | 791  778   <span class="k">my</span><span class="s">(</span><span class="i">$AtomicNumber</span><span class="cm">,</span> <span class="i">$ElementSymbol</span><span class="s">)</span><span class="sc">;</span> | 
|  | 792  779 | 
|  | 793  780   <span class="i">%ElementSymbolMap</span> = <span class="s">(</span><span class="s">)</span><span class="sc">;</span> | 
|  | 794  781 | 
|  | 795  782   <span class="k">for</span> <span class="i">$AtomicNumber</span> <span class="s">(</span><span class="k">keys</span> <span class="i">%ElementDataMap</span><span class="s">)</span> <span class="s">{</span> | 
|  | 796  783     <span class="i">$ElementSymbol</span> = <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}{<span class="w">ElementSymbol</span>}<span class="sc">;</span> | 
|  | 797  784     <span class="i">$ElementSymbolMap</span>{<span class="i">$ElementSymbol</span>} = <span class="i">$AtomicNumber</span><span class="sc">;</span> | 
|  | 798  785   <span class="s">}</span> | 
|  | 799  786 <span class="s">}</span> | 
|  | 800  787 | 
|  | 801  788 <span class="c"># Validate element ID...</span> | 
|  | 802 <a name="_ValidateElementID-"></a> 789 <span class="k">sub </span><span class="m">_ValidateElementID</span> <span class="s">{</span> | 
|  | 803  790   <span class="k">my</span><span class="s">(</span><span class="i">$ElementID</span><span class="s">)</span> = <span class="i">@_</span><span class="sc">;</span> | 
|  | 804  791   <span class="k">my</span><span class="s">(</span><span class="i">$ElementSymbol</span><span class="cm">,</span> <span class="i">$AtomicNumber</span><span class="s">)</span><span class="sc">;</span> | 
|  | 805  792 | 
|  | 806  793   <span class="k">if</span> <span class="s">(</span><span class="i">$ElementID</span> =~ <span class="q">/[^0-9]/</span><span class="s">)</span> <span class="s">{</span> | 
|  | 807  794     <span class="c"># Assume atomic symbol...</span> | 
|  | 808  795     <span class="i">$ElementSymbol</span> = <span class="i">$ElementID</span><span class="sc">;</span> | 
|  | 809  796     <span class="k">if</span> <span class="s">(</span><span class="k">exists</span> <span class="i">$ElementSymbolMap</span>{<span class="i">$ElementSymbol</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 810  797       <span class="i">$AtomicNumber</span> = <span class="i">$ElementSymbolMap</span>{<span class="i">$ElementSymbol</span>}<span class="sc">;</span> | 
|  | 811  798     <span class="s">}</span> | 
|  | 812  799     <span class="k">else</span> <span class="s">{</span> | 
|  | 813  800       <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 814  801     <span class="s">}</span> | 
|  | 815  802   <span class="s">}</span> | 
|  | 816  803   <span class="k">else</span> <span class="s">{</span> | 
|  | 817  804     <span class="c"># Assume atomic number...</span> | 
|  | 818  805     <span class="i">$AtomicNumber</span> = <span class="i">$ElementID</span><span class="sc">;</span> | 
|  | 819  806     <span class="k">if</span> <span class="s">(</span>!<span class="k">exists</span> <span class="i">$ElementDataMap</span>{<span class="i">$AtomicNumber</span>}<span class="s">)</span> <span class="s">{</span> | 
|  | 820  807       <span class="k">return</span> <span class="k">undef</span><span class="sc">;</span> | 
|  | 821  808     <span class="s">}</span> | 
|  | 822  809   <span class="s">}</span> | 
|  | 823  810   <span class="k">return</span> <span class="i">$AtomicNumber</span><span class="sc">;</span> | 
|  | 824  811 <span class="s">}</span> | 
|  | 825  812 | 
|  | 826 <a name="EOF-"></a></pre> | 
|  | 827 <p> </p> | 
|  | 828 <br /> | 
|  | 829 <center> | 
|  | 830 <img src="../../../images/h2o2.png"> | 
|  | 831 </center> | 
|  | 832 </body> | 
|  | 833 </html> |