Question

Atomic masses of elements are usually fractional because

Answer 1

Answer:

and

Explanation:

The atomic masses of most elements are fractional because they exist as a mixture ofisotopes of different masses. ... Most elements occur as a mixture of isotopes of different masses. The fractional atomic masses arise because of this mixture.

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Answer 2

Answer:

Because they exist of a mixture of isotopes of different masses. Fractional atomic masses arise because of this mixture.