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zaharov [31]
3 years ago
12

After You Read

Physics
1 answer:
soldier1979 [14.2K]3 years ago
5 0

Answer:

protons+neutrons= mass number, so if the mass number is 13 and protons are 6 its 13-6=7 neutrons

Explanation:

mass number: the sum of the number of protons and

neutrons in an atom

this is key as it explains that protons+neutrons= mass number, so if the mass number is 13 and protons are 6 its 13-6=7 neutrons

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