92
U
Uranium
Actinide period 7 f-block discovered: 1789
As a chemical element
Properties of the atom — they do not depend on what substance it is part of.
- Atomic number
- 92
- Atomic mass
- 238.0289 a.m.u.
- Electron configuration
- [Rn]7s2 5f3 6d1
- Electronegativity
- 1.38 on the Pauling scale
- Atomic radius
- 240 pm
- Ionization energy
- 6.194 eV
- Oxidation states
- +6, +5, +4, +3
As a simple substance
Properties of the substance these atoms form under ordinary conditions.
- State at 25 °C
- Solid
- Melting point
- 1408 K (1 134,85 °C)
- Boiling point
- 4404 K (4 130,85 °C)
- Density
- 18.95 g/cm³