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wel
2 years ago
12

The sum of the number of proteins and neutrons in an atoms nucleus is its __________ ___________.

Chemistry
2 answers:
otez555 [7]2 years ago
8 0

Answer:

Mass Number

Explanation:

In nuclear physics, the sum of the numbers of protons and neutrons present in the nucleus of an atom.

Please vote brainliest!

marishachu [46]2 years ago
4 0

Answer:

mass number

Explanation:

The mass number refers to the sum of the number of protons and neutrons present in the nucleus of an atom and denoted by A.

Mass number = Number of protons + Number of neutrons.

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