Sasha's+Page-+Tellurium

**Tellurium**
Tellurium (TE) is a chemical element wiht the atomic number, 52. It is a toxic metalloid who's looks can be confused for tin. Tellurium was discovered in the 18th century in a gold ore from the mines in Zlata close to Nagyszeben, Transylvania. This ore was known as "Faczebajer weißes blättriges Golderz" or //antimonalischer Goldkies// (antimonic gold pyrite).

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Tellurium is a brittle silvery-white element. It melts at 452° C. and boils at 478° C. When heated in a current of hydrogen it sublimes in the form of brilliant prismatic crystals. An amor phous form is obtained when tellurium is precipitated from its solutions by sulphur dioxide, this variety having a specific gravity 6.015. When heated in air, tellurium burns, forming the dioxide Te02. The element is insoluble in water, but dissolves in concentrated sulphuric acid forming a deep red solut.===== Apart from the precious metals, Tellurium is the rarest stable element in the earths crust.

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