L20_A
9.3  Bonding in Homonuclear Diatomic Molecules
9.4  Bonding in Heteronuclear Diatomic Molecules
9.5  Combining the Localized Electron and Molecular Orbital Models

L20_B
9.3  Bonding in Homonuclear Diatomic Molecules
9.4  Bonding in Heteronuclear Diatomic Molecules
9.5  Combining the Localized Electron and Molecular Orbital Models