A-Level Chemistry Chemical Bonding Ionic Bonding Properties of Ionic Compounds Covalent Bonding and Expansion of the Octet Dative Covalent Bonding Shapes of Molecules Effect of Lone Pairs on the Shape of Molecules Electronegativity Polar Bonds and Polar Molecules Intermolecular Forces Induced dipole-dipole interactions Permanent Dipole-Dipole Interactions Hydrogen Bonding Properties of Simple Molecular Substances Properties of Simple Molecular Substances 2 A-Level Chemistry Videos