2.1.1 0.0 / 5 ? ChemistryAtomic StructureASOCR Created by: a.cunninghamCreated on: 22-05-18 15:14 Proton nucleus, relative mass 1, relative charge +1 1 of 8 Neutron Nucleus, relative mass 1, relative charge 0 2 of 8 Electron Orbitals, relative mass 1/1800, relative charge -1 3 of 8 Isotopes atoms of the same element with the same protons but different number of neutrons 4 of 8 Relative Isotopic Mass the mass of one isotope compared to 1/12 of the mass of carbon-12 5 of 8 Relative Atomic Mass the average mass of one atom compared to 1/12 of the mass of carbon-12 6 of 8 Relative Molecular Mass the average mass of a molecule compared to 1/12 of the mass of carbon-12 7 of 8 Relative Atomic Mass = (total (isotopic mass x relative abundance)) / total relative abundance 8 of 8
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