31 Ga Gallium 69,723 u

Gallium

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Periode
4
Gruppe
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.

Erscheinungsbild: Silvery blue

Physikalische Eigenschaften

Atommasse 69.723 u
Dichte 5.91 g/cm³
Schmelzpunkt 29.8 °C
Siedepunkt 2399.8 °C
Phase bei STP Solid
Atomradius 136.0 pm

Elektronische Eigenschaften

Elektronegativität 1.81
Ionisierungsenergie 578.8 eV
Elektronenaffinität 28.9 eV
Valenzelektronen 3

Elektronenkonfiguration

Konfiguration [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

Entdeckung

Entdeckt von: Lecoq de Boisbaudran
Jahr: 1875

Periodensystem

Lanthanide Actinide

Compounds Containing Gallium

Mehr Nachübergangsmetall

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 nachübergangsmetall.
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.