Proton, Positively charged particle in nucleus, Neutron, Neutral particle in nucleus, Electron, Negatively charged particle in shells, Atomic number, Number of protons in nucleus, Mass number, Protons plus neutrons in nucleus, Isotope, Atoms with same protons, different neutrons, Relative atomic mass, Weighted average mass of isotopes, First ionisation energy, Energy to remove one electron from gaseous atoms, Successive ionisation energies, Energies for removing outer most electrons, Electron configuration, Arrangement of electrons in orbitals, Orbital, Region of high electron probability, Sub-shell, Group of orbitals with same energy, s orbital, Spherical orbital shape, p orbital, Dumb-bell shaped orbital, Filling order for TMs, fills 3d 4s, TMs ionisation order, 4s removed before 3d, Transition metals, involve 3d and 4s levels, Cation formation in TMs, loses 4s before 3d, periodicity, repeating pattern in elements, 2p orbitals have higher energy than, 2s

Year 12 Atomic Structure

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