what is the mass of an atom with 15 neutrons and 13 electrons ?

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01-04-2017
Chemistry

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what is the mass of an atom with 15 neutrons and 13 electrons ?

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Porshia Porshia · Answer 1 · 2017-04-01T02:13:19+02:00

Porshia Porshia

01-04-2017

The mass would be 28. The mass of an atom equals the number of neutrons and protons added together. In this case, they do not say the protons. But we must use our inside knowledge to know that the number of protons equals the number of electrons. Thus, your number of protons would be 13

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