C4 Electron structure & ionic bonding revision

Keywords: structure, bonding, electron, energy levels, shells, orbitals, rings, periodic table, patterns. Notes: This is a revision summary sheet that has questions about structure and bonding relating to electron arrangements and ion formation. Please note that this resource was originally designed for unit C4 of OCR 21st Century Science, but is applicable to other specifications. An answer sheet has now been addedl.