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Andru [333]
3 years ago
7

How do you find the mass number of an isotope?

Chemistry
1 answer:
solong [7]3 years ago
8 0

Answer:

The mass number of an isotope is the total number of protons and neutrons in an atomic nucleus. If you know that a nucleus has 6 protons and 6 neutrons, then its mass number is 12. If the nucleus has 6 protons and 7 neutrons, then its mass number is 13.

Explanation:

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