31
Ga
69.723
Gallium
Element 31 · 69.723 u · p-block
post transition
Melts in your hand at just 29.76°C. Used in semiconductors, LEDs, and as a liquid metal in thermometers.
Phase (STP)
Solid
Melting Point
29.76 °C
Boiling Point
2204 °C
Density
5.907 g/cm³
Electronegativity
1.81
Atomic Radius
130 pm
Ionization Energy
579 kJ/mol
Electron Affinity
41 kJ/mol
Discovered
1875 · Paul Emile Lecoq de Boisbaudran
Electron Configuration
[Ar] 3d10 4s2 4p1
Electron Orbitals
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