Gallium is a chemical element with symbol Ga and atomic number 31. It is in group 13 of the periodic table, and thus has similarities to the other metals of the group, aluminium, indium, and thallium. Gallium does not occur as a free element in nature, but as gallium(III) compounds in trace amounts in zinc ores and in bauxite.

Atomic Weight:  69.723
Density:        5.904 g/cm3
Melting Point:  29.76 °C
Boiling Point:  2204 °C