2.2 Rhenium (Re) occurs naturally in two distinct isotopes, 185 Re and 187 Re, with an average atomic mass of 186.207 amu. One of the isotopes (187 Re) constitute 62.60% of Re element and has the atomic mass of 186.956 amu. Using the information above, calculate the atomic mass of 185 Re isotope. a necessar

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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.