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27-02-2019
Biology

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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

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27-02-2019

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

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