§12.1 The general properties of the s-block elements §12.4 The particularity of Li and Be The diagonal relationship §12.3 The properties of the alkali and alkaline earth compounds §12.2 The elementary substances
§9.2 Valence Bond Theory §9.5 Bond Parameters §9.4 Molecular Orbital Theory §9.3 Valence Shell Electron Pair Repulsion (VSEPR) Theory §9.1 Lewis structure Theory