OEGetAverageWeight

OEGetAverageWeight(elemno: int) -> float

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.

elemno = oechem.OEElemNo_O
weight = oechem.OEGetIsotopicWeight(elemno, oechem.OEGetDefaultMass(elemno))