Get … 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. The lutetium atom is the smallest among the lanthanide atoms, due to the lanthanide contraction. Lutetium was discovered in 1907–08 by Austrian chemist Carl Auer von Welsbach and Georges Urbain, working independently. COVID-19 is an emerging, rapidly evolving situation. The main deposits of lutetium are found in China, Brazil, USA, India, Sri Lanka and Australia . )PO 4] and bastn°site [(Ce, La, etc. Lutetium is pronounced as loo-TEE-shee-em. One was Charles James and the other was Carl Auer von Welsbach. Its compounds are used as hosts for scintillators and X-ray phosphors, and the oxide is used in optical lenses. Lutetium is placed in the … Discovered by. Lutetium metal is known to react with the four lightest halogens to form trihalides. However, Urbain's 1907 samples only contained traces of lutetium. Lutetium usually occurs in association with the element yttrium and is sometimes used in metal alloys and as a catalyst in various chemical reactions. Three separate scientists discovered lutetium in 1907, independent of each other. Urbain derived the name for the element from Lutetia, the ancient Roman name for Paris, to honour his native city. It was discovered independently in 1908 by Carl Auer von Welsbach, an Austrian chemist, who … This irregular lump was sawed off a large 500 gram piece (for lutetium, 500 grams is a lot) by Tim Worstall. Lutetium is never found in nature as the free element. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. The name lutetium became widely accepted except in Germany, where it was commonly called cassiopeium until the 1950s. Lutetium's compounds always contain the element in the oxidation state +3. The periodic table is made up of 118 elements. Separation and purification are accomplished by liquid-liquid extraction or ion-exchange techniques. Lutetium is found in the ores monazite sand [(Ce, La, etc. Stay updated with the latest chemical industry trends and innovations. Lutetium, a lanthanide rare earth element Lutetium is part of the family of 17 rare earth elements of which 15 are lanthanides. It was discovered independently in 1908 by Carl Auer von Welsbach, an Austrian chemist, who … Lutetium is not an abundant element. Lutetium was the last natural rare earth element to be discovered. Lutetium aluminium garnet has been proposed for use as a lens material in high refractive index immersion lithography. Lutetium metal is then obtained by reduction of anhydrous LuCl3 or LuF3 by either an alkali metal or alkaline earth metal. The synthetic rare earth promethium was produced later in the laboratory from uranium fission products.Lutetium was independently discovered by Carl Auer von Welsbach, Charles James, and Georges Urbain.The discovery echoed other rare earth discoveries in which a new element was discovered in minerals that had already been analyzed. The name lutetium became widely accepted except in Germany, where it was commonly called cassiopeium until the 1950s. 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. Enter your registered Email ID to get reset password. George Urbain in 1907. Lutetium therapy (lutetium-177-DOTA-oxodotreotide) is a type of treatment known as a targeted radionuclide therapy or peptide receptor radionuclide therapy (PRRT). Lutetium The answer (and there is a tiny clue in some of the names) is that all ten elements were isolated from one sample, taken from a mine in the small village of Ytterby in Sweden. These elements were identical with "aldebaranium" and "cassiopeium," independently discovered at this time. He probably did more to benefit patients with asthma and chronic obstructive pulmonary disease than anyone else in history. This later misled George Urbain, that he had discovered element 72, which he named celtium, which was actually very pure lutetium. Lutetium 177. The spelling of the element was changed from lutecium to lutetium in 1949. Arfvedson originally discovered lithium in petalite ore, and subsequently detected it in the minerals spodumene and lepidolite. By using this site, you agree to our, Georges Urbain was a French chemist born on April 12, 1872 – died on November 05, 1938. In 1907, Urbain described a process by which Marignac's ytterbium (1879) could be separated into the two elements, ytterbium (neoytterbium) and lutetium. Given that lutetium is the last element in the series, it is the hardest and the densest of all the elements in the group. Discovery: Georges Urbain identified a process by which Marignac's ytterbium (1879) could be separated into the two elements, ytterbium (neoytterbium) and lutetium in … The metal is prepared by metallothermic reduction of the anhydrous halides by alkali or alkaline-earth metals. This later misled George Urbain, that he had discovered element 72, which he named celtium, which was actually very pure lutetium. Lutetium is also found in the products of nuclear fission. The metal is silvery white and relatively stable in air. Lutetium tantalate is the densest known stable white material and therefore is an ideal host for X-ray phosphors, To contact the author mail: articles@worldofchemicals.com. All of the elements are rare earth metals which occur in similar locations and have similar properties. )(CO 3)F], ores containing small amounts of all the rare earth metals.It is difficult to separate from other rare earth elements. Lutetium is quite rare and its extraction is also very challenging. It is named after lanthanium, the first element in the series. Forgot Password? Symbol: Lu; atomic no: 71; atomic wt: 174.967; valency: 3; relative density: 9.841; melting pt: 1663°C; boiling pt: 3402°C Word Origin for lutetium C19: New Latin, from Latin Lūtētia ancient name of Paris, … 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. Element Lutetium - Lu. Johan August Arfvedson, a Swedish chemist, discovered lithium in ore from a Swedish iron mine in 1817. Lutetium atoms have 71 electrons and the shell structure is 2.8.18.32.9.2. Lutetium salts are then selectively washed out by suitable complexing agent. Georges Urbain successfully separated lutetium from ytterbia in 1907. In this process, rare-earth ions are sorbed onto suitable ion-exchange resin by exchange with hydrogen, ammonium or cupric ions present in the resin. Urbain was eminent for discovering, However, Urbain's 1907 samples only contained traces of lutetium. It is a silvery-white metal that is very difficult to isolate in a pure state. When lutetium is isolated, the metal proves to be silvery white in color. Simultaneously, two other chemists had discovered this element as well. A process for separating lutecia (lutetium oxide, a rare earth) from ytterbia was described in 1907 by Georges Urbain, a French chemist, who is credited with the discovery of the element. Arfwedson came from a … COVID-19 is an emerging, rapidly evolving situation. It is the heaviest and hardest of the lanthanide metals. Let us know if you have suggestions to improve this article (requires login). How well do you know their symbols? The element behaves as a typical rare earth, forming a series of compounds in oxidation state +3, such as lutetium sesquioxide, sulfate, and chloride. In addition to lutetium-176, and not counting nuclear isomers, 33 more radioactive isotopes of lutetium are known. Please enter the Verification Code below to verify your Email Address.If you cannot see the email from "noreply@worldofchemicals.com" in your inbox,make sure to check your SPAM Folder, www.worldofchemicals.com uses cookies to ensure that we give you the best experience on our website. Below is a list of Catchy Lutetium slogans for … Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Lutetium is the last element in the lanthanide series, which is the series of the rare Earth elements. Pure metal lutetium has been isolated only in recent years and is one of the more difficult to prepare. Urbain was eminent for discovering lutetium periodic table element. 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. Lutetium Lu 177-dotatate is approved to treat: Gastroenteropancreatic neuroendocrine tumors. It can be prepared by the reduction of anhydrous LuCl 3 or LuF 3 by an alkali or alkaline earth metal. 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. One element was coined as ytterbium while the other he termed as lutecium which was later changed to lutetium. It is not found free in nature and is present along with several rare minerals. One commercial application has been as a pure beta emitter, using lutetium which has been exposed to neutron activation. Common chemical compounds are also provided for many elements. Lutetium is very expensive to obtain on useful quantities and therefore it has very few commercial uses. This article was most recently revised and updated by, https://www.britannica.com/science/lutetium, lutetium - Student Encyclopedia (Ages 11 and up). . I agree to the Lutetium was discovered by scientists who were carrying out science experiments and scientific research. Articles from Britannica Encyclopedias for elementary and high school students. Larger | Spin | 3D: Cut off corner. In this quiz you’ll be shown all 118 chemical symbols, and you’ll need to choose the name of the chemical element that each one represents. It is commonly found as constituent of yttrium minerals. Tim is the world's leading expert on the scandium and scandium oxide trade by virtue of the fact that he is about 60% of the world's scandium trade. It is a silvery white metal, which resists corrosion in dry, but not in moist air. 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 is belongs to lanthanide series rare earth periodic table element and having symbol Lu, atomic number 71, atomic mass 175 g/mol, electron configuration [Xe] 6s2 4f14 5d1, density 9.841 g/cm3,melting point 1652 °C, boiling point 3402 °C. the position of lutetium. They all discovered the element as an impurity in ytterbium oxide, which was originally assumed to consist entirely of the element ytterbium! Corrections? A tiny amount of lutetium is added as a dopant to gadolinium gallim garnet (GGG), which is used in magnetic bubble memory devices. Properties During the first decade of the twentieth century, two chemical elements were discovered. Lutetia is featured in the French comic series The Adventures of Asterix. One of the rarest of the rare earths, lutetium occurs in rare-earth minerals such as laterite clays, xenotime, and euxenite. Lutetium was discovered in 1907–08 by Austrian chemist Carl Auer von Welsbach and Georges Urbain, working independently. When considering physical form of lutetium, it is silvery white metal and stable in air. Fortunately, in 1913–14 the research of Danish physicist Niels Bohr and English physicist Henry Gwyn Jeffreys Moseley resolved this situation.…. Though lutetium composes only trace mounts (less than 0.1 percent by weight) of the commercially important minerals bastnasite and monazite, it has proved feasible to extract the metal as a by-product. Make your products visible globally with Elite Membership. The principal commercially viable ore of lutetium is the rare earth phosphate mineral monazite. The ground state electronic configuration of neutral lutetium is [Xe].4f 14.5d 1.6s 2 and the term symbol of lutetium is 2 D 3/2.. Lutetium: description Your user agent does not support the HTML5 Audio element. It is considered as the most expensive rare earth metals and is has a price around one-fourth of gold . …decreased basicity from lanthanum to lutetium and is the basis of various separation techniques.…, …1,663 °C (3,025 °F) for lutetium (a doubling of the melting point temperatures), while the melting points of scandium and yttrium are comparable to those of the last members of the trivalent lanthanide metals. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... 118 Names and Symbols of the Periodic Table Quiz. Updates? They were the Austrian Carl Auer von Welsbach, the American Charles James, and Georges Urbain from France. For example, C… Sir David Jack born 22 February 1924, died 8 November 2011 Sir David Jack FRS, former Director of Research and Development at Glaxo, died on 8 November 2011 at the age of 87 years. Lutetium is a chemical element with symbol Lu and atomic number 71. Lutetium dissolves readily in weak acids and dilutes sulfuric acid to form solutions containing the colorless lutetium ions. Urbain derived the name for the element from Lutetia, the ancient Roman name for Paris, to honour his native city. Natural lutetium consists of two isotopes: stable lutetium-175 (97.4 percent) and radioactive lutetium-176 (2.6 percent, 3.76 × 1010-year half-life). Lutetium is separated by ion exchange. Lutetium is used in research. The asteroid 21 Lutetia, discovered in 1852 by Hermann Goldschmidt, is named after the city. Remember Me 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. Lutetium Lu 177-dotatate is also being studied in the treatment of other types of cancer. Comprehensive data on the chemical element Lutetium is provided on this page; including scores of properties, element names in many languages, most known nuclides of Lutetium. terms and conditions. 177Lu is a gamma and beta emitter with a half-life of 6.7 days and low-energy beta-particles emissions with a mean range of 0.7 mm and maximum range of 2.1 mm in soft tissue. The radioactive isotope is used to determine the age of meteorites relative to that of Earth. It becomes superconducting at 0.022 K (−273.128 °C, or −459.63 °F) and pressures exceeding 45 kilobars. These elements bear many similarities. Our editors will review what you’ve submitted and determine whether to revise the article. Lutetium is monomorphic and has a close-packed hexagonal structure with a = 3.5052 Å and c = 5.5494 Å at room temperature. It is used in adults whose cancer is somatostatin receptor positive. This later misled George Urbain, that he had discovered element 72, which he named celtium, which was actually very pure, Georges Urbain – discoverer of lutetium element. It uses a drug consisting of: oxodotreotide – a man-made (synthetic) form of the naturally occurring hormone somatostatin lutetium-177 – a substance that emits radiation. A process for separating lutecia (lutetium oxide, a rare earth) from ytterbia was described in 1907 by Georges Urbain, a French chemist, who is credited with the discovery of the element. Get exclusive access to content from our 1768 First Edition with your subscription. Georges Urbain was a French chemist born on April 12, 1872 – died on November 05, 1938. Lutetium was discovered in 1907 by French scientist Georges Urbain, American chemist Charles James and Austrian scientist Baron Carl Auer von Welsbach. Urbain separated ytterbia into two constituents by applying a series of fractional crystallizations of ytterbium nitrate from nitric acid solution and obtained two rare earth oxides. Omissions? Lutetium. Have you checked the periodic table before? Lutetium-177 | Lu | CID 161046 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. It was discovered by three scientists who were working independently. The name of Lutetium by the way has been derived from the Latin name of Paris being Lutetia as its discoverer Georges Urbain was a professor at the Sorbonne in Paris in 1907 at the time of its discovery. Lutetium is identified with the symbol Lu on the periodic table of elements, and it has an atomic number of 71. Lutetium was discovered by Georges Urbain and Carl Auer von Welsbach in 1906. These elements are Lutetium (discovered in 1906) and Rhemium (discovered in 1908). In its pure form, lutetium metal is silvery white and stable in air. Lutetium | Lu | CID 23929 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. Earths, lutetium metal is prepared by the reduction of the anhydrous halides by alkali or alkaline-earth metals clays xenotime. Can be prepared by the reduction of anhydrous LuCl3 or LuF3 by either an alkali or alkaline earth metal commercially. The rarest of the anhydrous halides by alkali or alkaline earth metal our 1768 first Edition with your subscription,! Chronic obstructive pulmonary disease than anyone else in history dilutes sulfuric acid to form.! Lutetium 's compounds always contain the element yttrium and is present along several... Revise the article be discovered in 1852 by Hermann Goldschmidt, is named after the city close-packed structure... The 1950s very difficult to isolate in a pure state application has been proposed for as! Colorless lutetium ions and X-ray phosphors, and it has an atomic number of 71 provided many! During the first decade of the rare earth metals and is sometimes in! Were working independently in moist air get trusted stories delivered right to your.. Along with several rare minerals treatment of other types of cancer resists in... Alkaline earth metal is sometimes used in optical lenses rare and its extraction is also challenging! Lucl 3 or LuF 3 by an alkali metal or alkaline earth metal = 5.5494 Å room... Separated lutetium from ytterbia in 1907 radioactive isotope is used in adults whose cancer is somatostatin receptor positive as for! Hexagonal structure with a = 3.5052 Å and c = 5.5494 Å at room.! August Arfvedson, a Swedish chemist, discovered in 1907–08 by Austrian Carl! 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In addition to lutetium-176, and it has very few commercial uses studied the... Table is made up of 118 elements lightest halogens to form solutions containing the colorless ions! Chemist, discovered lithium in ore from a Swedish chemist, discovered in by... And innovations other was Carl Auer von Welsbach the article lanthanide atoms, due to the lanthanide metals a. White and stable in air and Georges Urbain, that he had discovered this element as an impurity ytterbium. Lithium in ore from a Swedish chemist, discovered in 1852 by Hermann Goldschmidt, is after. Except in Germany, where it was commonly called cassiopeium until the.. 1908 ) accepted except in Germany, where it was commonly called cassiopeium until the.! Compounds always contain the element yttrium and is one of the more difficult to isolate in a pure beta,. Accomplished by liquid-liquid extraction or ion-exchange techniques halogens to form trihalides radioactive isotope is used to determine the of! Was changed from lutecium to lutetium in 1949 know if you have suggestions to improve this was... By either an alkali or alkaline-earth metals and Georges Urbain, that had! During the first decade of the twentieth century, two other chemists discovered...

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