Isotopes | Allotropes | Compounds | Main Page
Uranium
Electron Configuration 2,8,18,32,21,9,2
Electron Configuration [Rn] 5f3 6d1 7s2
Electronegativity 1.38
Enthalpy of Fusion 15.5 kJ mol-1
Enthalpy of Vaporisation 417.1 kJ mol-1
Heat Capacity 27.665 J mol-1 K-1
Thermal Conductivity 27.5 W m-1 K-1
Thermal Expansion 13.9 μm m-1 K-1
Magnetic ordering Paramagnetic
Electrical resistivity 0.280 Ω m
Speed of sound 3155 m s-1
Young's modulus 208 GPa
Shear modulus 3155 GPa
Bulk modulus 100 GPa
Poisson ratio 0.23
Atomic Radii
Atomic Radius 175 pm
Bohr Radius 0 pm
Covalent Radius 0 pm
Van der Waals 186 pm
Oxidation States
Main U+6
Other U+2, U+3, U+4, U+5
Ionisation Energies (kJ mol-1) show graph
M - M+ 584
M+ - M2+ 1420
Covalent Bonds (kJ mol-1)