How many protons(p), neutrons(n), and electrons(e) does the following ion have?   P3-  Group of answer choices 31p, 15n, 15e 15p, 16n, 18e 15p, 16n, 12e 15p, 16n, 15e

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.