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19 December, 07:42

Which statement describes the masses of the particles that make up an atom?

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  1. 19 December, 07:49
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    The mass of the atom is equal to the sum of the number of protons and the number of neutrons. In a neutral atom, the number of protons is equal to the number of electrons. The atomic number meanwhile of an atom is equal to the number of protons of the atom.
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