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Atomic Mass * definition
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Atomic Mass *
definition

User Viru
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the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes
User Mihai Lazar
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Answer:

The mass of an atom expressed in atomic mass units.

Step-by-step explanation:

User Ahmad Sherif
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