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liraira [26]
3 years ago
11

1 What is the sum of all the protons and neutrons in an atom?

Chemistry
1 answer:
MaRussiya [10]3 years ago
6 0

Answer:

<em>Mass number.</em>

Explanation:

The sum of the number of protons and neutrons in an atom is called the mass number.

For example: Carbon-12 has 12 protons and 12 neutrons.

- Sophia

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