Tellurium is a chemical element with symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur. It is occasionally found in native form as elemental crystals.

Atomic Weight: 434
Density:       35.54 g/cm3
Melting Point: 754 
Boiling Point: 546