L17_A
8.5  Energy Effects in Binary Ionic Compounds
8.6  Partial Ionic Character of Covalent Bonds
8.7  The Covalent Chemical Bond: A Model
8.8  Covalent Bond Energies and Chemical Reactions
8.9  The Localized Electron Bonding Model
8.10 Lewis Structure
8.11 Exceptions to the Octet Rule
8.12 Resonance 

L17_B
8.5  Energy Effects in Binary Ionic Compounds
8.6  Partial Ionic Character of Covalent Bonds
8.7  The Covalent Chemical Bond: A Model
8.8  Covalent Bond Energies and Chemical Reactions
8.9  The Localized Electron Bonding Model
8.10 Lewis Structure
8.11 Exceptions to the Octet Rule
8.12 Resonance