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Naturally occurring Lithium (Li) is composed of two isotopes, Lithium-6 (Li= 6.0151223) and Lithium-7 (Li=...

Naturally occurring Lithium (Li) is composed of two isotopes, Lithium-6 (Li= 6.0151223) and Lithium-7 (Li= 7.0160040). Given that the atomic mass of Lithium is 6.941, compute the natural abundances (percentage) of (mass number=6 & atomic number=3 AND mass number=7 & atomic number=3)

(7.5% Lithium-6 and 9.25% Lithium-7)?

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