asked 152k views
1 vote
If an atom has 34 protons and 40 neutrons, what is its mass number?

2 Answers

1 vote

add the protons and neutrons together to get the mass number


answered
User Synox
by
8.3k points
3 votes
The answer is 74.........
answered
User Brian Kretzler
by
8.4k points

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