Telluuria
Telluuria, also known as Tellurium, is a chemical element with the symbol Te and atomic number 52. It is a brittle, mildly toxic, rare, silver-white metalloid that looks like tin but is more brittle. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found in native form as elemental crystals. Tellurium is primarily obtained from the anode sludges produced during the electrolytic refining of copper. The largest use of tellurium is in cadmium telluride solar panels. Tellurium is also used in certain alloys, as a coloring agent in glass, and in ceramics. It has several isotopes, the most stable of which is tellurium-128. Tellurium was discovered in 1782 by Franz Joseph Müller von Reichenstein, who identified it as a new element in a gold ore. The name Tellurium comes from the Latin word "tellus," meaning "earth," reflecting its association with the earthly element sulfur.