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TELLURIUM (52Te127.60)

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Element Description

Occasionally found native, tellurium is more often found in combination with other metals. It is silvery-white, lustrous, brittle, and crystalline. (Amorphous tellurium is dark gray to brown and has metal characteristics.) As a p-type semiconductor, it shows greater conductivity in certain directions. Tellurium is used to improve the machinability of copper and stainless steel. When combined with lead, tellurium increases resistance to sulfuric acid while improving strength and hardness.

Property Name Property Value Property Name Property Value
Atomic Code (52Te127.60) Atomic Volume 20.5W/D
CAS # 13494-80-9 First Ionization Energy 208K-cal/g-mole
Electronegativity 2.1Pauling's
Melting Point 449.5°C Covalent Radius 1.36Angstroms
Boiling Point 989.8°C Mohs Hardness @ 20°C 2.0-2.5
Density 6.24g/cm3 Electrical Resistivity 1.6x105µΩ-cm
Themal Conductivity 0.014cal/cm2/cm/s/°C Crystal Structure Hexagonal
Specific Heat @ 25°C 0.047cal/g°C Modulus of Elasticity 6x106psi
Heat of Fusion 4.27k-cal/g-atom Poisson Ratio 0.33
Heat of Vaporization 11.9k-cal/g-atom


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