Topic 1 definitions and trends 0.0 / 5 ? ChemistryThe Periodic TableASEdexcel Created by: DavidW001Created on: 04-05-19 21:34 Orbital Definition A region within an atom, in which there is a high probability of being an electron. An orbital can hold up to 2 electrons with opposite spin. 1 of 5 Periodicity A repeating pattern of physical and chemical properties across different periods. 2 of 5 Relative atomic mass The weighted mean mass of an element relevant to 1/12th the mass of carbon 12 3 of 5 Relative Isotopic mass Mass of an atom of an isotope relevant to 1/12th the mass of a C12 atom. 4 of 5 Structure of Boron Giant lattice 5 of 5
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