Lutetium


Electron Configuration

General Properties

Atomic Symbol Lu
Atomic Weight 174.967 g/mol
Element Number 71
Standard State Solid
Standard Type Strongly Basic
Date of Discovery 1905
Discoverer Auer von Welsbach

Physical Properties

Oxidation States 3
Boiling Point 3668 K
Melting Point 1936 K
Density 9.84 g/cm³
Electron Configuration [Xe]4f14,5d1,6s2
Acid/Base Properties Basic
Crystal Structure Hexagonal
Electronegativity 1.27
Heat of Vaporization 355* kJ/mol
Heat of Fusion 18.6* kJ/mol
Electrical Conductivity 1.5 10^6omg-¹cm-¹
Thermal Conductivity 16.4 Wm-¹K-¹ (at 300 K)
Specific Heat Capacity 0.15 Jg-¹K-¹ (at 300 K)
First Ionization Potential 5.43
Atomic Volume 17.8 cm³/mol
Atomic Radius 1.75 Å
Covalent Radius 1.56 Å
Synthetic No