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The atomic mass of an atom is equal to the total number of its proton the total number of its protons neutrons and electrons the total number of its protons and neutrons the total number of its electrons
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The atomic mass of an atom is equal to

the total number of its proton
the total number of its protons neutrons and electrons
the total number of its protons and neutrons
the total number of its electrons
the total number of its nuetrons

User Jstuardo
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1 Answer

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it is APPROXIMATELY EQUAL to the sum of the number of protons and neutrons in the nucleus of the atom.

User Alex Barnes
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