Uranium |
Symbol | U |
---|---|
Latin name | Uranium |
Atomic number | 92 |
Period | 7 |
Element category | Inner transition elements |
Relative atomic mass | 238.0289 |
Group | VI.B |
Electronegativity | 1.7 |
Oxidation numbers | 3, 1, 5, 6 |
Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f3 6d1 7s2 |
Density [g/cm3] | 19.03 |
State | Solid |
Melting point [°C] | 1132.3 |
Boiling point [°C] | 3900 |
Thermal conductivity [W m-1K-1] | 27.6 |
Heat capacity [J K-1g-1] | 0.12 |
Discovery | 1789 |
Hardness [Mohs scale] | 6.0 |
Vickers hardness [MPa] | 1960 |
Brinell hardness [MPa] | 2400 |
Young's modulus [GPa] | 208 |
Electrical conductivity [S m-1] | 3.6 · 10-6 |
Shear modulus [GPa] | 111 |
1.st ionization energy [eV] | 6.1941 |
Stable isotopes | 0 |
Unstable isotopes | 15 |