An atomic cation with a charge of +2 has the following electron configuration: 15-2s 2p 3s 3p%3d6 What is the chemical symbol for the ion? How many electrons does the ion have? How many 3s electrons are in the ion? 0 0 x 5

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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.