Uranium

Electron Configuration

General Properties:

Atomic Symbol U
Atomic Weight 238.00 g/mol
Element Number 92
Standard State Solid
Standard Type Strongly Basic
Date of Discovery 1789
Discoverer Klaproth

Physical Properties

Oxidation States 6, 5,4,3
Boiling Point 4407 K
Melting Point 1408 K
Density 18.95 g/cm³
Electron Configuration [Rn]5f3,6d1,7s2
Acid/Base Properties Amphoteric
Crystal Structure Orthorhombic
Electronegativity 1.38
Heat of Vaporization 422.58 kJ/mol
Heat of Fusion 15.48 kJ/mol
Electrical Conductivity 3.6 10^6omg-¹cm-¹
Thermal Conductivity 27.6 Wm-¹K-¹ (at 300 K)
Specific Heat Capacity 0.12 Jg-¹K-¹ (at 300 K)
First Ionization Potential 6.05
Atomic Volume 12.50 cm³/mol
Atomic Radius 1.38 Å
Covalent Radius 1.42 Å
Synthetic No