Atomic number: 52
Density at 25°C: solid: 6.24 g·cm−3
Tellurium is one of the rarest metalloids on the earth's crust, though on a cosmic scale it is quite common. It tends to be found combined with other minerals and elements. Tellurium is often used in a other metals to produce alloys to help improve machining.
Use, natural applications or common combinations:
- Solar cells
- Optical glass fibres
- Standard atomic weight: 127.60(3)
- Melting point: 449.51 °C
- Boiling point: 988 °C
- Radioactivity: almost all naturally stable. a few radioactive 120Te, 128Te and 130Te but very long half lives.