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11-01-2017
Biology

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ONE QUICK PHYSICAL SCIENCE QUESTION

1. Why isn’t it possible for an atom to have a mass number of 15 and an atomic number of 18?

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11-01-2017

An atom with an atomic number of 12 has 12 protons. Because the mass number is the sum of the protons and neutrons, the mass number would need to be at least 12. I hope this helped!

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