An atom of ___________ contains 15 protons, 16 neutrons, 15 ...

★ Biochemistry Quiz

An atom of ___________ contains 15 protons, 16 neutrons, 15 electrons and therefore has a mass number is ________.

A. Phosphorus, 31

B. Sulfur, 32

C. Phosphorus, 15

D. Zinc, 65

Select your answer:

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