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Stels [109]
3 years ago
5

. Define the mass number of an atom.

Chemistry
2 answers:
enot [183]3 years ago
7 0
The mass number is defined as the total number of protons and neutrons in an atom.
Dennis_Churaev [7]3 years ago
6 0

The mass number is defined as the total number of protons and neutrons in an atom.

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