Lutetium
Symbol
Lu
Atomic Number
71
Atomic Weight
174.967
Element Classification
Discovered By
Georges Urbain
Discovery Date
1907 (France)
Name Origin
Named for the ancient name of Paris, Lutecia.
Density (g/cc)
9.8404
Melting Point (K)
1936
Boiling Point (K)
3668
Appearance
Silvery-white, hard, dense, rare-earth metal
Atomic Radius (pm)
175
Atomic Volume (cc/mol)
17.8
Covalent Radius (pm)
156
Ionic Radius
85 (+3e)
Specific Heat
0.155
Fusion Heat (kJ/mol)
n/a
Evaporation Heat (kJ/mol)
414
Thermal Conductivity (@25°C W/m K)
(16.4)
Debye Temperature (K)
n/a
Pauling Negativity Number
1.27
First Ionizing Energy (kJ/mol)
513
Oxidation States
3
Electronic Configuration
[Xe] 4f14 5d1 6s2
Lattice Structure
Hexagonal(HEX)
Lattice Constant
3.510
Lattice C/A Ratio
1.585
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