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4.64 OEGetIsotopicWeight 

double OEGetIsotopicWeight(unsigned int elemno, unsigned int mass)

Returns the atomic weight for a specific isotope. The isotope is specified by the parameters ``elemno'', the atomic number or number of protons in the nucleus, and ``mass'', the total number of protons and neutrons in the nucleus.

To get the average atomic weight of an element, based upon typically occuring abundances of its natural isotopes, use the OEChem OEGetAverageWeight function.

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Version 1.3.1
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Documentation released on July 30, 2004.