Question

16. There are three isotopes of Magnesium: Magnesium-24, Magnesium-25, and Magnesium-26. The average atomic mass listed on the Periodic Table for Magnesium is 24.3 u, Which isotope has the highest

percent abundance?
not enough information given
Magnesium-25
Magnesium-24
Magnesium-26

Answer 1

not enough information given

Because without the relative abundance we can not specify the isotope with highest percentage abundance.