Uranium (U)
Uranium
Uranium (U) is an actinide in period 7. Its relative atomic mass is 238.03 and the molar mass of the atom is 238.03 g/mol.
Atomic number 92
Atomic mass 238.03
Molar mass 238.03 g/mol
Category Actinide Solid
Properties of uranium
| Atomic number | 92 |
|---|---|
| Symbol | U |
| Latin name | Uranium |
| Relative atomic mass | 238.03 |
| Molar mass | 238.03 g/mol |
| Group, period, block | —, 7, f |
| Category | Actinide |
| State at 20 °C | Solid |
| Electron configuration | [Rn] 5f³ 6d¹ 7s² |
| Electronegativity (Pauling) | 1.38 |
| Atomic radius | 175 pm |
Electron configuration of uranium
Electrons per shell
K2L8M18N32O21P9Q2
Full notation
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f³ 6s² 6p⁶ 6d¹ 7s²
Noble-gas notation
92 protons · 92 electrons[Rn] 5f³ 6d¹ 7s²
Formula and compounds of uranium
Simple substanceUuraniumMolar mass of U: 238.03 g/mol
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Frequently asked questions
The relative atomic mass of uranium is 238.03, so the molar mass of the atom is 238.03 g/mol.
Full: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 5f³ 6s² 6p⁶ 6d¹ 7s². Noble-gas notation: [Rn] 5f³ 6d¹ 7s².