Charles James stayed out of the argument surrounding the element and instead produced the largest supply of the element. Did you know? Lutetium is a chemical element wi the seembol Lu an atomic nummer 71. Lutetium was first discovered by discovered independently by several different chemists, all in 1907. Lutetium was actually the last lanthanide to be isolated in 1907; and was simultaneously discovered by three chemists working in different parts of the world. It becomes superconducting at 0.022 K (−273.128 °C, or −459.63 °F) and pressures exceeding 45 kilobars. . Lutetium definition, a trivalent rare-earth element. Lutetium is quite rare and its extraction is also very challenging. The name lutetium became widely accepted except in Germany, where it was commonly called cassiopeium until the 1950s. Lutetium (Lu) has an atomic number of seventy-one. Amazingly, this metal was discovered by three separate scientists in the same year. 1.3.1 Who Discovered. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Updates? It is a rare and expensive element and is the last member of lanthanide series. Corrections? Discovered by. Urbain derived the name for the element from Lutetia, the ancient Roman name for Paris, to honour his native city. Lutetium (Lu), chemical element, a rare-earth metal of the lanthanide series of the periodic table, that is the densest and the highest-melting rare-earth element and the last member of the lanthanide series. The radioactive isotope is used to determine the age of meteorites relative to that of Earth. Answers to life's questions, Why are Whale Sharks an Endangered Species, How Many Countries Make up the Commonwealth. Separation and purification are accomplished by liquid-liquid extraction or ion-exchange techniques. Discovered by Georges Urbain, Carl Auer von Welsbach, and Charles James, lutetium is a lanthanide metal and a rare-earth element that was discovered in 1907 within the mineral monazite. Johan August Arfvedson, a Swedish chemist, discovered … The metal is easily dissolved in diluted acids—except hydrofluoric acid (HF), in which a protective layer of LuF3 forms on the surface and prevents the metal from further dissolution. Copyright © 2017. It was found in a complex black mineral that had been found near the town of Ytterby, Sweden , in 1787. Britannica Kids Holiday Bundle! The metal is paramagnetic from 0 K (−273 °C, or −460 °F) to its melting point at 1,936 K (1,663 °C, or 3,025 °F) with a temperature-independent magnetic susceptibility between approximately 4 and 300 K (−269 and 27 °C, or −452 and 80 °F). Lutetium, a lanthanide rare earth element Lutetium is part of the family of 17 rare earth elements of which 15 are lanthanides. Naturally occurring lutetium (71 Lu) is composed of one stable isotope 175 Lu (97.41% natural abundance) and one long-lived radioisotope, 176 Lu with a half-life of 3.78 × 10 10 years (2.59% natural abundance). These elements were identical with "aldebaranium" and "cassiopeium," independently discovered at this time. The spelling of the element was changed in 1949 from lutecium to lutetiumâ¦ History and Uses : The mineral gadolinite ((Ce, La, Nd, Y) 2 FeBe 2 Si 2 O 10 ), discovered in a quarry near the town of Ytterby, Sweden, has been the source of a great number of rare earth elements. The name of Lutetium by the way has been derived from the Latin name of … Facts about Lutetium 2: discovery Georges Urbain, Carl Auer von Welsbach and Charles James took the credit as the scientists who discovered lutetium independently in 1907. This metal reacts with the lightest halogens forming tri-halides, which are soluble in water. In addition to lutetium-176, and not counting nuclear isomers, 33 more radioactive isotopes of lutetium are known. Found in Minerals, Mining, Ores of Minerals. It can be prepared by the reduction of anhydrous LuCl … Even though the naming rights for the element went to Urbain it was later found that his sample only contained traces of the element and Welsbach’s sample was pure. It is a sillery white metal which resists corrosion in dry, but nae in moist, air. Lutetium was discovered by scientists who were carrying out science experiments and scientific research. It was discovered by three scientists who were working independently. The … Let us know if you have suggestions to improve this article (requires login). How well do you know their symbols? It is one of the rarest and expensive metals and costs about $10,000 per kg! In its pure form, lutetium metal is silvery white and stable in air. Lutetium was discovered in 1907–08 by Austrian chemist Carl Auer von Welsbach and Georges Urbain, working independently. The worldwide production is just 10 tonnes a year and most lutetium is produced in China, the United States, Brazil, India, Sri Lanka and Australia. Sources of lutetium. Lutetium 177 is a radiopharmaceutical precursor with specific characteristics. They were the Austrian Carl Auer von Welsbach, the American Charles James, and Georges Urbain from France. Lutetium therapy (lutetium-177-DOTA-oxodotreotide) is a type of treatment known as a targeted radionuclide therapy or peptide receptor radionuclide therapy (PRRT). Lutetium was first discovered in the early 1900s by two chemists working independently. Lutetium is one of the hardest metals coming in the list of lanthanides. Lutetium is pronounced as loo-TEE-shee-em. They range in mass from 150 to 184; the least stable isotope (lutetium-150) has a half-life of 45 milliseconds, and the most stable isotope is lutetium-176. Omissions? Lutetium (Lu) has an atomic number of seventy-one. The periodic table is made up of 118 elements. The asteroid 21 Lutetia, discovered in 1852 by Hermann Goldschmidt, is named after the city. Your email address will not be published. Let’s find out who discovered this rare element. This later misled George Urbain, that he had discovered element 72, which he named celtium, which was actually very pure lutetium. Answer to: Where was lutetium discovered? 1.4 Abundance. Symbol: Lu; atomic weight: 174.97; atomic number: 71. Who discovered lutetium? George Urbain in 1907. George Urbain in 1907. Applications of Lutetium The only commercially viable source of lutetium is monazite, which contains just 0.0001% of lutetium! It is a chemical element and is represented by the symbol Lu and the atomic number 71. It is considered to be a rare earth element and occurs at just 0.5mg/kg in the crust of the earth. Thirty-four radioisotopes have been characterized, with the most stable, besides 176 Lu, being 174 Lu with a half-life of 3.31 years, and 173 Lu with a half-life of 1.37 years. Lutetium was first discovered in the early 1900s by two chemists working independently. Lutetium is also found in the products of nuclear fission. These elements were identical with "aldebaranium" and "cassiopeium", independently discovered by von Welsbach at about the same time. The spelling of the element was changed from lutecium to lutetium in 1949. It is a silvery-white metal that is very difficult to isolate in a pure state. The low melting points for the light to middle lanthanides are thought to be due to…, …naturally occurring rare-earth element (lutetium) was discovered in 1907, but research into the chemistry of these elements was difficult because no one knew how many true rare-earth elements existed. 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