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4 votes
What determines the mass number of an element?

the number of protons minus the number of electrons

the number of protons

the total number of protons, electrons, and neutrons

the total number of neutrons and protons

2 Answers

0 votes
The mass number of an element is determined by the total number of neutrons and protons.
answered
User Ron Newcomb
by
8.2k points
5 votes
Hi , the answer is the total number of neutrons and protons.
answered
User Charlie Dalsass
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8.1k points

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