Question

Q4. Why do atom have fractional atomic
mass?​

Answer 1

Answer:

The atomic mass of most elements are fractional because they exist as a mixture of isotopes 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

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