Chemistry definitions 0.0 / 5 ? ChemistryASOCR Created by: Matthew CoathupCreated on: 27-04-13 17:18 Isotope Atoms of the same element with different numbers of neutrons 1 of 5 Atomic Number The number of protons in the nucleus of an atom 2 of 5 Mass Number The number of protons and neutrons in the nucleus 3 of 5 Ion A positively or negatively charged atom or covalently bonded group of atoms 4 of 5 Relative Isotopic Mass The maass of 5 of 5
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