Chapter 12 The s-Block Elements 12.1 The general properties of the s-block elements ק12.2 The elementary substances x 12.3 The properties of the alkali and alkaline earth compounds X 12.4 The particularity of Li and Be The diagonal relationship §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 Chapter 12 The s-Block Elements