92 U
Actinide
Uranium
Fuel for reactors.
Properties of Uranium
- Atomic number (Z)
- 92
- Symbol
- U
- Atomic mass
- 238.03 g/mol
- Category
- Actinide
- Group
- 3
- Period
- 7
- Electron configuration
- [Rn] 5f³ 6d¹ 7s²
- Electronegativity (Pauling)
- 1.38
- Atomic radius
- 175 pm
- First ionization energy
- 598 kJ/mol
- Melting point
- 1405.3 K (1132.2 °C)
- Boiling point
- 4404 K (4130.9 °C)
- Density
- 18.95 g/cm³
- Phase at 25 °C
- Solid
- Discovered
- Discovered in 1789
Frequently asked questions
What is Uranium?
Uranium (U) is an actinide, element number 92 on the periodic table. Fuel for reactors.
What is the atomic number and atomic mass of Uranium?
Uranium has atomic number 92 and an atomic mass of about 238.03 g/mol.
What is the electron configuration of Uranium?
The electron configuration of Uranium is [Rn] 5f³ 6d¹ 7s².
Where is Uranium on the periodic table?
Uranium sits in group 3, period 7, and is classified as a actinide.