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Element Details

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LUTETIUM (71Lu174.967)

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Element Description

Lutetium is a lustrous, soft, ductile, silvery-white metal. It occurs in minimal amounts in most minerals containing yttrium. The pure metal has only been recently isolated and is one of the most difficult to prepare. Lutetium is relatively stable in air and reacts slowly with water.

Property Name Property Value Property Name Property Value
Atomic Code (71Lu174.967) First Ionization Energy 115K-cal/g-mole
CAS # 7439-94-3 Electronegativity 1.2Pauling's
Covalent Radius 1.56Angstroms
Melting Point 1663°C Electrical Resistivity @ 298°C 58.2µΩ-cm
Boiling Point 3402°C Crystal Structure Hexagonal
Density 9.84g/cm3 Compressibility 2.38x10-6cm2/kg
Specific Heat @ 25°C 0.037cal/g°C Thermal Neutron Cross Section 108barns/atom
Heat of Fusion 4.6k-cal/g-atom Magnetic Moment 0.21Bohr magnetons
Heat of Vaporization 90k-cal/g-atom Magnetic Susceptibility 17.9x10-6emu/mole
Atomic Volume 17.8W/D Standard Electrode Potential +2.1volts


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