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The mass of a proton is equal to the mass of the neutron. What is the atomic mass of an atom ? Group of answer choices number of neutrons only number of protons and neutrons number of protons only number of electrons only

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kdreams2020

Answer:

number of protons and neutrons

Explanation:

hey there,

< Electrons do not count toward the overall atomic mass of an atom, so the atomic mass of an atom is the size of protons + neutrons.

(Protons and neutrons make up the nucleus.) >

Hope this helped! Feel free to ask anything else.

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