Uranium
Symbol
U
Atomic Number
92
Atomic Weight
238.0289
Element Classification
Discovered By
Martin Klaproth
Discovery Date
1789 (Germany)
Name Origin
Named for the planet Uranus.
Density(g/cc)
19.05
Melting Point
1405.5
Boiling Point(K)
4018
Appearance
Silvery-white, dense, ductile and malleable, radioactive metal.
Atomic Radius(pm)
138
Atomic Volume(cc/mol)
12.5
Covalent Radius(pm)
142
Ionic Radius
80 (+6e) 97 (+4e)
Specific Heat
0.115
Fusion Heat
12.6
Evaporation Heat(kj/mol)
417
Thermal Conductivity(@25°C W/m K)
27.5
Debye Temperature
n/a
Pauling Negativity Number
1.38
First Ionizing Energy(kj/mol)
686.4
Oxidation States
6, 5, 4, 3
Electronic Configuration
[Rn] 5f3 6d1 7s2
Lattice Structure
Orthorhombic(ORC)
Lattice Constant
2.850
Lattice C/A Ratio
n/a
