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TERBIUM (65Tb158.92534)

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Element Description

A member of the rare earth elements, terbium is a silvery-gray metal that is both malleable and ductile. It is soft and can be cut with a knife. Terbium is relatively stable in air, but it can be more reactive in certain forms, especially powder. It is commonly used as a dopant in solid state devices and as an activator for green phosphors.

Property Name Property Value Property Name Property Value
Atomic Code (65Tb158.92534) Electronegativity 1.2Pauling's
CAS # 7440-27-9 Covalent Radius 1.59Angstroms
Electrical Resistivity @ 298°C 114.5µΩ-cm
Melting Point 1356°C Crystal Structure Hexagonal
Boiling Point 3230°C Compressibility 2.45x10-6cm2/kg
Density 8.27g/cm3 Thermal Neutron Cross Section 44barns/atom
Specific Heat @ 25°C 0.044cal/g°C Magnetic Moment 9.7Bohr magnetons
Heat of Fusion 3.9k-cal/g-atom Magnetic Susceptibility 193,000x10-6emu/mole
Heat of Vaporization 70k-cal/g-atom Transformation Temperature 1287°C
Atomic Volume 19.2W/D Standard Electrode Potential +2.2volts
First Ionization Energy 155K-cal/g-mole


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