What subatomic particles make up an atom’s mass number

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asked Apr 23, 2020 158k views

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Jason Jun Ge · Answer 1 · 2020-04-29T09:00:05+0000

Answer:

Basically, together, the number of protons and the number of neutrons determine an element's mass number: mass number = protons + neutrons. If you want to calculate how many neutrons an atom has, you can simply subtract the number of protons, or atomic number, from the mass number.

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What subatomic particles make up an atom’s mass number

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