Asked Mar 3, 2020

Gallium (Ga) consists of two naturally occurring isotopes
with masses of 68.926 and 70.925 amu. (a) How many protons
and neutrons are in the nucleus of each isotope? Write
the complete atomic symbol for each, showing the atomic
number and mass number. (b) The average atomic mass of
Ga is 69.72 amu. Calculate the abundance of each isotope.

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