CH-816

Relative atomic and molecular mass

Chemistry · Secondary 3 · Medium · Relative atomic and molecular mass

Lithium has two isotopes,

^{6}_{3}\text{Li}

with abundance 8.0% and

^{7}_{3}\text{Li}

with abundance 92.0%.

Using the idea of relative atomic mass, what is the

A_r

of lithium to 3 significant figures?

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