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Astronomy Chemical element

Gallium

Gallium (Ga) is a chemical element belonging to the category Post-transition metal, with atomic number 31 and atomic mass 69.723 u. This sheet describes its fundamental properties, periodic position and physical characteristics.

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Astronomy · Chemical element

Gallium

ELV

Identity

  • Name: Gallium
  • Symbol: Ga
  • Atomic number: 31
  • Atomic mass: 69.723 u

Position in the periodic table

  • Group: 13
  • Period: 4
  • Category: Post-transition metal

Physico-chemical properties

  • Standard state: Solid
  • Melting point: 29.76°C
  • Boiling point: 2204°C
  • Density: 5.91 g/cm³
  • Electron configuration: [Ar] 3d¹⁰ 4s² 4p¹

Scientific description

Gallium is a chemical element with symbol Ga and atomic number 31. It is classified as a post-transition metal, located in group 13 and period 4. Its standard atomic mass is 69.723 u.