Uranium (U) — Element 92: Properties & Data
Uranium (U) is an actinide with atomic number 92 and atomic mass 238.03. It has melting point 1408 K (1135 °C), boiling point 4404 K (4131 °C), density 18.95 g/cm³. It sits in period 7 of the periodic table and was discovered in 1789.
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Key facts
| Atomic mass | 238.03 u |
|---|---|
| Electron configuration | [Rn]7s2 5f3 6d1 |
| Oxidation states | +6, +5, +4, +3 |
| Electronegativity (Pauling) | 1.38 |
| Atomic radius (van der Waals) | 240 pm |
| Ionization energy | 6.194 eV |
| Melting point | 1408 K |
| Boiling point | 4404 K |
| Density | 18.95 g/cm³ |
| Standard state | Solid |
| Discovered | 1789 |
Domande frequenti
What is the electron configuration of uranium?
The ground-state electron configuration of uranium is [Rn]7s2 5f3 6d1.
What group and period is uranium in?
Uranium (U) is in period 7 (actinide series) of the periodic table, classified as a actinide.
What is the melting point of uranium?
Uranium melts at 1408 K (1135 °C).
What is the standard state of uranium?
Uranium is a solid at standard temperature and pressure.
Related elements
Informazioni su questi dati: property values compiled from IUPAC Standard Atomic Weights (2021), the NIST Atomic Spectra Database, and PubChem. Curated by the Aladdin Scientific technical team. Last reviewed: .