What is the mass number of an atom with 5 protons and 7 neutrons?

asked Jul 23, 2018 141k views

1 vote

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5 votes

Pretty close to 12 .

Stivlo answered Jul 25, 2018

8.1k points

4 votes

Boron I think look at the periodic table

Umer answered Jul 27, 2018

by Umer

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