Why is the atomic mass usually given as an average (and a decimal)?

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asked Oct 16, 2020 37.3k views

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Sridhar Narasimhan · Answer 1 · 2020-10-21T01:55:49+0000

elements exist as isotopes. hydrogen has mostly 1 proton in the nucleus. but deuterium is also hydrogen with 1 neutron, tritium is also hydrogen with two neutrons. the average takes into account the element and its isotopes

Why is the atomic mass usually given as an average (and a decimal)?

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