OEGetAverageWeight

double OEGetAverageWeight(unsigned int elemno)

Returns the average atomic weight of an element, based upon the naturally occurring abundances of its isotopes. To return the ‘monoisotopic’ weight for a particular element use the OEGetIsotopicWeight function like the following.

        uint elemno = OEElemNo.O;
        double weight = OEChem.OEGetIsotopicWeight(elemno, OEChem.OEGetDefaultMass(elemno));