tellurium In A Sentence
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- A combination of bismuth and tellurium is most commonly used for the thermocouples.
- The host rocks of Dashuigou independent tellurium ore deposit are mainly green schist facies metamorphic rocks.
- The gold is often found in conjunction with tellurium (first discovered in Transylvania in 1782) and is extracted principally at Nagyag, Kapnik-Banya, Zalatna and V6rbspatak.
- Tellurium makes up 9 parts per billion of the universe by weight.
- In 1938 the company introduced lead-bearing steels to the United Kingdom, and in the 1960s developed free machining steels containing tellurium and an alloy replacement steel.
- Natural gold tellurides, like calaverite and krennerite ( AuTe 2 ), petzite ( Ag 3 AuTe 2 ), and sylvanite ( AgAuTe 4 ), are minor ores of gold ( and tellurium ).
- Telluric acid, H2Te04, is obtained in the form of its salts when tellurium is fused with potassium carbonate and nitre, or by the oxidizing action of chlorine on a tellurite in alkaline solution.
- Selenium has been used in the same way as tellurium.
- It appears that amalgamation is often impeded by the tarnish found on the surface of the gold when it is associated with sulphur, arsenic, bismuth, antimony or tellurium.
- Soc., 1907, 91, p. 1849), by determining the ratio of tellurium dioxide to oxygen and by analysis of tellurium tetrabromide, obtained 127.60, and V.
- On average, humans ingest about 600 micrograms of tellurium daily.
- "' tellurium tetrachloride "'is the inorganic compound with the empirical formula TeCl 4.
- Microorganisms also absorb tellurium and emit dimethyl telluride.
- The other pair of platinum wires are connected by a tellurium-bismuth thermo-couple, the junction of which just makes contact with the centre of the fine wire.
- Common materials include UNS C36000 Free-Cutting Brass, lead-free brass, oxygen-free copper and other highly machinable alloys of copper, nickel, and tellurium.
- The slight variations in specific gravity are due to the presence of small amounts of arsenic, sulphur or tellurium, or to enclosed impurities.
- The commercial element usually contains a certain amount of sulphur, and some tellurium, and various methods have been devised for its purification.
- Tellurium is produced mainly in the United States, Peru, Japan and Canada.
- Periodic table element 52 with symbol Te is commonly referred to as tellurium.
- Associated minerals include sylvanite, hessite, altaite, petzite, empressite, native tellurium, native gold, galena, sphalerite, colusite, tennantite and pyrite.
- Sci., 1909 (iv.), 28, p. 347) claim to have separated two substances (of atomic weights 126.49 and 128.85 respectively) from tellurium, by fractional precipitation of tellurium chloride with water, bu
- The analogous sesquichalcogenides with sulfur, selenium, and tellurium are also known.
- Binary compounds with sulfur, selenium, and tellurium are also known.
- It is a low temperature hydrothermal mineral that occurs associated with vulcanite, native tellurium, cameronite, petzite, sylvanite, berthierite, pyrite, arsenopyrite and bornite.
- The precipitated tellurium is then fused with potassium cyanide, the melt extracted with water and the element precipitated by drawing a current of air through the solution and finally distilled in a
- Telluric acid and its salts mostly contain hexacoordinate tellurium.
- They are both obtained by passing chlorine over tellurium, the product being separated by distillation (the tetrachloride is the less volatile).
- Vauquelin in 1797, and Klaproth's investigation of tellurium in 1798, the next important series of observations was concerned with platinum and the allied metals.
- Tellurium and selenium are the heavy elements most depleted by this process.
- The tellurium oxides and hydrated oxides form a series of acids, including tellurous acid ( ), orthotelluric acid ( ) and metatelluric acid ( ).
- Klaproth decided to call the element tellurium after the Latin word for earth.
- Tellurium dioxide is formed by heating tellurium in air, whence it burns with a blue flame.
- Bismuth forms compounds similar to the trisulphide with the elements selenium and tellurium.
- The chemistry of polonium is similar to that of tellurium and bismuth.
- Dimercaprol also enhances the toxicity of selenium and tellurium, so it is not to be used to remove these elements from the body.
- These substances, and also carbon, sulphur, selenium and tellurium, render the metal very brittle.
- O X v?, the moon) on account of its close analogy with tellurium (Lat.
- The dioxide is formed by burning tellurium in air or xxvi.
- In the naming of inorganic compounds it is a suffix that indicates a polyatomic anion with a central tellurium atom.
- At higher temperatures tellurium is sufficiently plastic to extrude.
- Selenium and tellurium are produced as byproducts of copper refining.
- Tellurous acid forms " tellurite " salts containing the anion TeO . Other tellurium cations include, which consists of two fused tellurium rings and the polymeric.
- A hydrogen chalcogenide and the simplest hydride of tellurium, it is rarely encountered because it decomposes rapidly to its constituent elements.
- It is necessary to remove as completely as possible any lead, tin, bismuth, antimony, arsenic and tellurium, impurities which impair the properties of gold and silver, by an oxidizing fusion, e.g.
- There are a lot of tellurium minerals in them, such as petzite, calaverite, hessite, altaite , tellurbismuth, rucklidgeite and sylvan. The grade of some section of ore body is up to industrial grade.
- It is also associated with native tellurium, tellurite, native gold, pyrite, rodalquilarite, mackayite, sonoraite, cuzticite and eztlite.
- Marckwald (Ber., 1903, 36, p. 2662) showed that the Joachimsthal pitchblende yields tellurium and a minute quantity of the strongly radioactive polonium which is precipitated by bismuth (see Radioacti
- Selenium and tellurium also show variants of these structural motifs.
- The following, however, are negative towards the remaining elements which are more or less positive:-Fluorine, chlorine, bromine, iodine, oxygen, sulphur, selenium, tellurium.
- When heated in air, tellurium burns, forming the dioxide Te02.
- Kirke Rose, by tellurium.
- Molybdenum ditelluride can be formed by electrodeposition from a solution of molybdic acid ( H 2 MoO 4 ) and tellurium dioxide ( TeO 2 ).
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