Question

The atomic masses of elements are generally not whole numbers. Explain why.​

Answer 1

Answer:

Because elements have isotopes.

Explanation:

So the atomic mass is the average of an element's isotopes.

Answer 2

Answer:

The atomic masses of most elements are not whole numbers, because they are a weighted average of the mass numbers of the different isotopes of that element, with respect to their abundances in nature.

Explanation: