Symbol
Ga
Atomic Number
31
Atomic Mass
69.723
Protons
31
Neutrons
39
Electrons
31
Type
Post-transition Metal
Isotopes
Gallium-69, Gallium-71
Discovery Year
1875
Discovered By
Paul Émile Lecoq de Boisbaudran
Group
13
Period
4
Boiling Point
4030°F
Melting Point
85.58°F
Electron Configuration
[Ar] 3d¹⁰ 4s² 4p¹
Density (g/cm³)
5.91
Crystal Structure
Orthorhombic
Magnetism
Diamagnetic
Abundance in Earth's Crust
0.0019%
Phase at Room Temperature
Solid