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Atomic Number	31

Atomic Symbol	Ga

Atomic Weight	69.723 amu

Group	Other Metal, 13

Form	Solid

Density @ STP	5.91 g/cm³

Melting Point	29.76 °C (85.566 °F, 302.91 °K)

Boiling Point	2204 °C (3999.2 °F, 2477.15 °K)

Heat of Fusion	5.59 kJ/mol

Heat of Vaporization	254 kJ/mol

First Ionization Potential	5.99930 eV

Electronegativity (on Pauling scale	1.81

Specific Heat Capacity	0.371 J/g K

Ground State Electron Configuration	4s² 4p¹

Oxidation State(s)	+3

Stable Isotopes and Natural Abundance on Earth	⁶⁹Ga, 60.109%; ⁷¹Ga, 39.892%

Selected Radioisotopes	⁶⁴Ga, ⁶⁷Ga, ⁶⁸Ga

Atomic Radius	136 pm

Crystal Structure	Orthorhombic

Discovered by	Lecoq de Boisbaudran, 1875