31
Ga
Gallium
Post-transition metal period 4 group 13 p-block discovered: 1875
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 31
- Atomic mass
- 69.723 a.m.u.
- Electron configuration
- [Ar]4s2 3d10 4p1
- Electronegativity
- 1.81 on the Pauling scale
- Atomic radius
- 187 pm
- Ionization energy
- 5.999 eV
- Electron affinity
- 0.3 eV
- Oxidation states
- +3
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 302.91 K (29,76 °C)
- Boiling point
- 2477 K (2 203,85 °C)
- Density
- 5.91 g/cm³