14. The masses listed on the periodic table represent the weighted average of all existing isotopes for that element. This means that the more abundant an isotope is, the more it contributes
to the weighted atomic mass listed on the periodic table. Chlorine has two isotopes, one with a mass
of 35, which is 76% abundant, and the other has a mass of 37 and is 24% abundant. Show your
work to justify the weighted atomic mass of Chlorine that is listed on the periodic table.
I