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Liula [17]
3 years ago
14

What is the mass number

Chemistry
1 answer:
AlladinOne [14]3 years ago
6 0

Answer:

the total number of protons and neutrons in a nucleus.

The mass number, also called atomic mass number or nucleon number, is the total number of protons and neutrons in an atomic nucleus. It is approximately equal to the atomic mass of the atom expressed in atomic mass units.

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