Gallium

Symbol

Ga

Atomic number

31

Atomic mass	69.72		Thermal conductivity	0.406
Atomic radius	1.81		Covalent radius	1.26
Density	5.91		Atomic volume	11.8
Melting point	302.9		Oxidation states	3
Boiling point	2676		Stable isotopes	2
Heat of vapor.	258.7		Electronegativity	1.81
Heat of fusion	5.59		First ionization	5.999
Specific heat	0.37		Electrical conduct.	...

Electron configuration

Gallium

Gallium is a blue-gray metal which becomes a silvery liquid at 29.8°C. It has the rather startling property of melting in your hand. Like water, it expands on freezing. It's heat of fusion is 8.04 x 10⁴ J/kg. Its chemistry resembles that of aluminum. It is a rare element and found little use until its properties as a semiconductor were discovered. It is used in the production of light emitting diodes (LEDs).

Gallium has been used as the liquid in high-temperature quartz-tube thermometers, which can be used to over 1200°C.

Certain gallium compounds are excellent semiconductors and have been extensively used in rectifiers, transistors, photoconductors, and laser and maser diodes.

Gallium Nuclear Data