Chapter 12 The s-Block Elements 12.1 The general properties of the s-block elements X 12.2 The elementary substances קl2.3 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