31 Ga
Post-transition metal
Gallium
Melts in your hand at 30°C.
Properties of Gallium
- Atomic number (Z)
- 31
- Symbol
- Ga
- Atomic mass
- 69.723 g/mol
- Category
- Post-transition metal
- Group
- 13
- Period
- 4
- Electron configuration
- [Ar] 3d¹⁰ 4s² 4p¹
- Electronegativity (Pauling)
- 1.81
- Atomic radius
- 136 pm
- First ionization energy
- 579 kJ/mol
- Melting point
- 302.91 K (29.8 °C)
- Boiling point
- 2477 K (2203.8 °C)
- Density
- 5.907 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1875
Frequently asked questions
What is Gallium?
Gallium (Ga) is a post-transition metal, element number 31 on the periodic table. Melts in your hand at 30°C.
What is the atomic number and atomic mass of Gallium?
Gallium has atomic number 31 and an atomic mass of about 69.723 g/mol.
What is the electron configuration of Gallium?
The electron configuration of Gallium is [Ar] 3d¹⁰ 4s² 4p¹.
Where is Gallium on the periodic table?
Gallium sits in group 13, period 4, and is classified as a post-transition metal.