Question

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The average atomic mass of a sample of an element X is 16.2u. What are the percentage of isotopes $\frac{16}{8}X$ and $\frac{18}{8}X$ in the sample?​

Answer 1

Answer:

It is given that the average atomic mass of the sample of element X is 16.2 u. Let the percentage of isotope 8 18 X be y%. Thus, the percentage of isotope 8 16 X will be (100 − y)%. Therefore, the percentage of isotope 8 18 X is 10%.