Magnesium has 3 naturally occurring isotopes: Magnesium-24, Magnesium-25, and Magnesium-26. They have masses 23.985042 amu,

Question

Magnesium has 3 naturally occurring isotopes: Magnesium-24, Magnesium-25, and
Magnesium-26. They have masses 23.985042 amu, 24.985837 amu, and 25.982593 amu,
respectively. If 78.99% of all Magnesium is Magnesium-24, what are the abundances of
Magnesium-25 and Magnesium-26?

Kunduz · Accepted Answer

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