What is a rule for determining the mass number of an atom or ion

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asked Oct 25, 2022 216k views

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Monique · Answer 1 · 2022-10-31T22:28:53+0000

Answer:

The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus.

sorry if im wrong

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What is a rule for determining the mass number of an atom or ion

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What is a rule for determining the mass number of an atom or ion