Tellurium
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Tellurium is a chemical element, having the chemical symbol Te. Its atomic number (the number of protons) is 52. It has a standard atomic weight of 127.6 g•mol −1 and is a solid in its elemental form.
Tellurium is considered to be a member of the "Metalloid" class of elements. At a pressure of 101.325 kPa, it has a boiling point of 988 °C and a melting point of 449.5 °C.