Atomic Masses and Composition of Nucleus Nuclei Physics Physics Nuclei Class 12th

Why do some elements have fractional atomic masses?

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Jaya Sharma | Contributor-Level 10

7 months ago

Most elements exist as a mixture of isotopes in nature. Isotopes are atoms of same elements that have same number of protons but they have different numbers of neutrons. Since the number of neutrons may vary, different isotopes of same element have different atomic masses.

The atomic mass of an eleme

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