What is the calculated average atomic mass and identity of the element?
An element consists of 1.4% of an isotope with mass 203.973amu, 24.1% of an isotope with the mass 205.9745amu 22.1% of an isotope with mass 206.9759amu, and 52.4% of an isotope with the mass 207.9766amu.
M.m=203.973*0.014+205.9745*0.241+206.9759*0.221+207.9766*0.524=207.2169
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