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8. If an atom contains 12 protons and 10 neutrons, what's its mass number? A. 2 B. 10 C. 12 D. 22 What it’s mass number?

8. If an atom contains 12 protons and 10 neutrons, what's its mass number? A. 2 B. 10 C. 12 D. 22 What it’s mass number?
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2 votes
8. If an atom contains 12 protons and 10 neutrons, what's its mass number?

A. 2
B. 10
C. 12
D. 22
What it’s mass number?

User Shaheed
by
8.6k points

1 Answer

3 votes
I would be D.22 since you would add the neutrons and protons together in prefer to he the mass number.
User Mostlyoxygen
by
7.9k points
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