Atomic Mass of Metallo - Brainly

The element rubidium (Rb) has an average atomic mass of 85.468 amu. Rubidium has two common isotopes, 85Rb and 87Rb. The average atomic mass of 85Rb is 85.00 amu and the abundance of is 72.2%, what is the average atomic mass of 87Rb? AAM = (% A)(mass A) + (% B)(mass B) ................
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