The element copper exists in nature as two isotopes: 63 Cu has a mass of 62.9296 u and 65 Cu has a mass of 64.9278 u.The average atomic mass of copper is 63.55 u. Calculate the relative abundance of the two copper isotopes. % % 65 Cu 63 Cu

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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.