The hydrotellurites are converted into the insoluble tellurium dioxide while the selenites stay in solution. Natural tellurite and tellurate minerals also occur, formed by oxidation of tellurides near the Earth's surface. Tamil meaning of Tellurium … The +2 oxidation state is exhibited by the dihalides, TeCl2, TeBr2 and TeI2. [65][86] [79] In yeast, this reduction is mediated by the sulfate assimilation pathway. The −2 oxidation state is exhibited in binary compounds with many metals, such as zinc telluride, ZnTe, produced by heating tellurium with zinc. It is also good to use when you want to be bright and positive. Thanks for using this online dictionary, we have been helping millions of people improve their use of the TAMIL language with its free online services. Tellurium definition is - a semimetallic element that occurs in a silvery-white brittle crystalline form of metallic luster, in a dark amorphous form, or combined with … ... Found 0 sentences matching phrase "yellow tellurium".Found in 0 ms. Tel′lurate, a salt of telluric acid.—adjs. More Te containing photocathodes have been grown using other alkali metals such as rubidium, Potassium, and Sodium, but they have not found the same popularity that Cs-Te has enjoyed[63][64]. [59] Bismuth telluride (Bi2Te3) and lead telluride are working elements of thermoelectric devices. Atomic weight 125.2. yellow tellurium . In the +6 oxidation state, the –OTeF5 structural group occurs in a number of compounds such as HOTeF5, B(OTeF5)3, Xe(OTeF5)2, Te(OTeF5)4 and Te(OTeF5)6. It would steadily build up your outcomes. Tellurium (Latin tellus meaning "earth") was discovered in 1782 by the Hungarian Franz-Joseph Müller von Reichenstein (Müller Ferenc) in Nagyszeben (now, Sibiu) Transylvania. This ore was known as "Faczebajer weißes blättriges Golderz" (white leafy gold ore from Faczebaja, German name of Facebánya, now Fața Băii in Alba County) or antimonalischer Goldkies (antimonic gold pyrite), and according to Anton von Rupprecht, was Spießglaskönig (argent molybdique), containing native antimony. Add a comment 10. Ultra Silver is a bit of an unsung superhero in terms of its performance. [90], Semiconductor and electronic industry uses, Anderson, Don L.; "Chemical Composition of the Mantle" in, Mullin, J.B.; Cole-Hamilton, D.J. Tellurous acid forms tellurite salts containing the anion TeO2−3. 4 are stable and 4 are radioactive.One of the radioactive ones lasts longer than any other isotope. Tellurium is a shiny, silver-white substance that breaks easily, found in sulphide ores. Pronounce word 150. Word Origin early 19th cent. After a thorough investigation that lasted three years and included more than fifty tests, Müller determined the specific gravity of the mineral and noted that when heated, the new metal gives off a white smoke with a radish-like odor; that it imparts a red color to sulfuric acid; and that when this solution is diluted with water, it has a black precipitate. In the +4 oxidation state, halotellurate anions are known, such as TeCl2−6 and Te2Cl2−10. [24][25][26], In 1789, a Hungarian scientist, Pál Kitaibel, discovered the element independently in an ore from Deutsch-Pilsen that had been regarded as argentiferous molybdenite, but later he gave the credit to Müller. These anions are square planar in geometry. Tellurium is sometimes found in its native (i.e., elemental) form, but is more often found as the tellurides of gold such as calaverite and krennerite (two different polymorphs of AuTe2), petzite, Ag3AuTe2, and sylvanite, AgAuTe4. Thus, many common sulfide minerals contain substantial quantities of selenium and only traces of tellurium. Hope you get to hear it for yourself. நச்சுத்தன்மை கொண்டது என்பது அறிந்த செய்தியாகும் . [40][41] Since then, however, existence in the solid phase is doubted and in dispute, although it is known as a vapor fragment; the black solid may be merely an equimolar mixture of elemental tellurium and tellurium dioxide. [85] Tellurium poisoning is particularly difficult to treat as many chelation agents used in the treatment of metal poisoning will increase the toxicity of tellurium. [23] The following year, he reported that this was erroneous and that the ore contained mostly gold and an unknown metal very similar to antimony. [20], Tellurium (Latin tellus meaning "earth") was discovered in the 18th century in a gold ore from the mines in Kleinschlatten (today Zlatna), near today's city of Alba Iulia, Romania. pp. Turkish: Tellur ... Meanings for tellurium Add a meaning Cancel. (uncountable) The chemical element with atomic number 52. See definitions of tellurium. [37]:285, Fluorine forms two halides with tellurium: the mixed-valence Te2F4 and TeF6. The rubber produced in this way shows improved heat resistance. [30], Commercial-grade tellurium is usually marketed as 200-mesh powder but is also available as slabs, ingots, sticks, or lumps. Tamil: டெலூரியம் 0 rating rating ratings . The addition to steel and copper produces an alloy more machinable than otherwise. It is a brittle, mildly toxic, rare, silver-white metalloid.Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens.It is occasionally found in native form as elemental crystals. [21][22] In 1782 Franz-Joseph Müller von Reichenstein, who was then serving as the Austrian chief inspector of mines in Transylvania, concluded that the ore did not contain antimony but was bismuth sulfide. Dimethyl telluride has been observed in hot springs at very low concentrations. With metallic element ending -ium. In recent years, the tellurium price was driven up by increased demand and limited supply, reaching as high as US$100 per pound in 2006. mol−1), the next element in the periodic table. Halotellurium cations are also attested, including TeI+3, found in TeI3AsF6. Tellurium definition, a rare, lustrous, brittle, crystalline, silver-white element resembling sulfur in its properties, and usually occurring in nature combined with gold, silver, or other metals of high atomic weight: used in the manufacture of alloys and as a coloring agent in glass and ceramics. Tellurium is a chemical element with the symbol Te and atomic number 52. The compounds for semiconductor industry and are prepared by adduct purification. [31][32] Despite the expectation that improved production methods will double production, the United States Department of Energy (DoE) anticipates a supply shortfall of tellurium by 2025. pp. Find more Spanish words at wordhippo.com! : modern Latin, from Latin tellus , tellur- ‘earth’, probably named in contrast to uranium . Symbol Te A brittle, silvery-white, rare metallic element usually found in combination with gold and other metals, produced commercially as a byproduct... Tellurium - definition of tellurium by The Free Dictionary Gemstone will help you change your negative thinking and start to make a positive.... Element.It has the chemical element with atomic number 52, a Silver grey metalloid our use of cookies red... `` Earth '' ( see tellurian ) of copper ore typically yields kilogram. High performing mixed oxide catalysts for the heterogeneous catalytic selective oxidation of propane to acrylic.! 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