If an atom has 34 protons and 40 neutrons, what is its mass number? 40 6 74 34

asked Jul 20, 2018 35.8k views

3 votes

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3 votes

The answer is 74

The mass equals the number protons and neutrons.

34+40= 74

Jeff Maass answered Jul 22, 2018

8.6k points

2 votes

Protons+Neutrons
34+40= 74

Shrys answered Jul 27, 2018

by Shrys

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