Alkali metal

The alkali metals are a group (column) in the periodic cairt conseestin o the chemical elements lithium (Li), sodium (Na), potassium (K),^{[note 1]} rubidium (Rb), caesium (Cs),{{refn|Caesium is the spellin recommendit bi the Internaitional Union o Pure an Applee'd Chemistry (IUPAC).^[1]