Discovered By: Martin Heinrich Klaproth
Discovery year: 1789

The following table showing some properties of Uranium(U):

Table Example
Atomic number 92
Group n/a
Period 7
Block f
Electrons 92
Protons 92
Neutrons 146
Atomic weight 238.02891
Oxidation states +3, +4, +5, +6
Electron per shell K2 L8 M18 N32 O21 P9 Q2


Table Example
Electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^10 6p^6 7s^2 5f^3 6d^1
Covalent radius 196 pm
Van der Waals radius 186 pm
Boiling point 3927°C
Melting point 1135°C
Phase Solid
Fusion heat 14 kJ.mol^-1
Vaporization heat 420 kJ.mol^-1
Thermal expansion 1.39*10^-5 K^-1
Color Silver


Table Example
Brinell hardness 2400 MPa
Bulk modulus 100 GPa
Density 19050 kg.m^-3
Liquid density 17300 kg.m^-3
Mohs hardness 6
Poisson ratio 0.23
Shear modulus 111 GPa
Sound speed 3155 m.s^-1
Vickers hardness 1960 MPa
Young's modulus 208 GPa


Table Example
Electrical type Conductor
Magnetic type Paramagnetic
Resistivity 2.8*10^-7 Ohm.m
Superconducting point 0.68 K
Electronegativity 1.38
Valence 6
First ionization energy 597.6 kj.mol^-1
Radioactive Yes
Half life 1.41*10^17 s
Lifetime 2.034*10^17 s
Neutron cross section 7.57 barn
Lifetime Alpha emission (α-decay)