Group 13 (Boron Group) Elements

Group 13, the boron group, consists of boron, aluminium, gallium, indium and thallium. Boron -- the only non-metal of the group -- sits at one extreme of the family's chemistry, forming an unusually rich range of electron-deficient covalent compounds, while aluminium, the most abundant metal in the earth's crust, anchors the group's metallic, ionic-leaning chemistry. …