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Physics, 26.09.2019 02:00 frank2010

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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8. if an atom contains 12 protons and 10 neutrons, what's its mass number?
a. 2
b. 10
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