31 Ga Gallium 69.723 u

Gallium

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Period
4
Group
13
Block
p-block
Phase (STP)
Solid

Gallium is a soft metal that melts just above room temperature. It is used in semiconductors, LEDs, and solar cells.

Appearance: Silvery blue

Physical Properties

Atomic Mass 69.723 u
Density 5.91 g/cm³
Melting Point 29.8 °C
Boiling Point 2399.8 °C
Phase at STP Solid
Atomic Radius 136.0 pm

Electronic Properties

Electronegativity 1.81
Ionization Energy 578.8 eV
Electron Affinity 28.9 eV
Valence Electrons 3

Electron Configuration

Configuration [Ar] 3d¹⁰ 4s² 4p¹

Electron Shell Configuration

Gallium electron shell configuration Ga 2e⁻ 8e⁻ 18e⁻ 3e⁻

Position in Periodic Table

Gallium position in the periodic table Ga

Discovery

Discovered by: Lecoq de Boisbaudran
Year: 1875

Periodic Table

Lanthanides Actinides

Compounds Containing Gallium

More Post-Transition Metal

Frequently Asked Questions

What is Gallium?
Gallium (Ga) is a chemical element with atomic number 31. It is a solid at standard temperature and pressure, classified as a post-transition metal.
What are the key properties of Gallium?
Gallium has an atomic mass of 69.723 u, density of 5.91 g/cm³, melting point of 29.8°C, boiling point of 2399.8°C.
What is the electron configuration of Gallium?
The electron configuration of Gallium is [Ar] 3d10 4s2 4p1. It is in the p-block of the periodic table.
Who discovered Gallium?
Gallium was discovered by Lecoq de Boisbaudran in 1875.
What is the electronegativity of Gallium?
Gallium has an electronegativity of 1.81 on the Pauling scale.