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lilavasa [31]
3 years ago
10

The mass number of an atom is obtained by totaling the number of _____ and _____.

Chemistry
2 answers:
son4ous [18]3 years ago
8 0
Mass number is the sum of protons and neutrons inside an atom.

Atomic mass = no. of protons + no. of neutrons
Alborosie3 years ago
4 0

the sum of protons and neutrons inside an atom is your answer


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