Using fractional crystallization technique, he separated ytterbia into two rare earth oxides namely ytterbium and lutecium, which was later renamed lutetium. It is one of the rarest and expensive metals and costs about $10,000 per kg! Lutetium definition, a trivalent rare-earth element. Lutetium is not an abundant element. They were the Austrian Carl Auer von Welsbach, the American Charles James, and Georges Urbain from France. Lutetium was independently discovered in 1907 by French scientist Georges Urbain, Austrian mineralogist Baron Carl Auer von Welsbach, and American chemist Charles James as an impurity in the mineral ytterbia, which was thought by most chemists to consist entirely of ytterbium. 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. The radioactive isotope is used to determine the age of meteorites relative to that of Earth. In addition to lutetium-176, and not counting nuclear isomers, 33 more radioactive isotopes of lutetium are known. It is a chemical element and is represented by the symbol Lu and the atomic number 71. Meet the students that are part of the Lutetium Project. Want to Know it? a magnetic moment. Discovered by. Applications. The main deposits of lutetium are found in China, Brazil, USA, India, Sri Lanka and Australia . It has a few, mostly medical, uses. Separation and purification are accomplished by liquid-liquid extraction or ion-exchange techniques. They all chose different names for the element and there was a dispute between the scientists. Lutetium was discovered in 1907–08 by Austrian chemist Carl Auer von Welsbach and Georges Urbain, working independently. Your email address will not be published. FAMILY Lanthanide (rare earth metal) PRONUNCIATION loo-TEE-she-um. Copyright © 2017. Lutetium is quite rare and its extraction is also very challenging. 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 was discovered by scientists who were carrying out science experiments and scientific research. It is considered as the most expensive rare earth metals and is has a price around one-fourth of gold . 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. Discovered by: George Urbain in 1907: Chemical Properties of Lutetium. ATOMIC MASS 174.97. Symbol: Lu; atomic weight: 174.97; atomic number: 71. 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. 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. 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. It is a silvery-white and relatively stable in air, rare earth metal. The table below shows the abundance of Lutetium in Universe, Sun, Meteorites, Earth's Crust, Oceans and Human Body. …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. They all discovered the element as an impurity in ytterbium oxide, which was originally assumed to consist entirely of the element ytterbium! Georges Urbain, Charles James and Carl Auer von Welsbach independently discovered lutetium from ytterbium oxide. The most common source of commercially produced Lutetium is the mineral monazite. 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. In 1907, Urbain described a process by which Marignac's ytterbium (1879) could be separated into the two elements, ytterbium (neoytterbium) and lutetium. Who discovered lutetium? The spelling of the element was changed from lutecium to lutetium in 1949. . Lutetium was the last natural rare earth element to be discovered. He showed great courage and compassion as a physician during this period, and some believe his POW … Lutetium: history Lutetium was discovered by Georges Urbain and Carl Auer von Welsbach in 1907 at France, Germany. Lutetium was first discovered in the early 1900s by two chemists working independently. Discover the reasons why we decided to launch our project! George Urbain in 1907. The visual identity. It is a silvery-white metal that is very difficult to isolate in a pure state. Hi, I'm Tim and I want to welcome you to wanttoknowit.com. It was the last lanthanoid element to be discovered, and its naming was hotly contested by the three scientists who independently discovered it in 1907. Lutetium. um (lo͞o-tē′shē-əm) n. Symbol Lu A silvery-white element of the lanthanide series that is exceptionally difficult to separate from the other rare-earth elements with which it is found, used in nuclear technology. ATOMIC NUMBER 71. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. It was found in a complex black mineral that had been found near the town of Ytterby, Sweden, in 1787. The name Lutetium is derived from the Latin Lutetia, the Roman name for Paris, where it was discovered in 1907. Lutetium is used in research. It is the hardest and the densest of the lanthanides. More history... Lutetium: isotopes. 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. Lutetium-177 therapy is only used on men who suffer from cancer that has originated in the prostate and who have exhausted other previous lines of treatment. 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. 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. Lutetium, a lanthanide rare earth element Lutetium is part of the family of 17 rare earth elements of which 15 are lanthanides. Updates? Signs and symptoms of the disease include discomfort or pain in the abdomen or rectum, nausea, vomiting, diarrhoea, blood in the s… This article was most recently revised and updated by, https://www.britannica.com/science/lutetium, lutetium - Student Encyclopedia (Ages 11 and up). He is credited with the discover and was given naming rights. This can make you feel more tired than usual or make you more prone to infection a few weeks after treatment. The first sample of pure metal was produced in 1953. These elements were identical with "aldebaranium" and "cassiopeium," independently discovered at this time. Omissions? Lutetium-177 is a medium-energy beta-emitter with a half-life of 6.7 days and a maximum energy of 0.5 MeV (maximum soft-tissue penetration of 2 mm). Common chemical compounds are also provided for many elements. Origin of name: from the Greek word "Lutetia" meaning "Paris". The element behaves as a typical rare earth, forming a series of compounds in oxidation state +3, such as lutetium sesquioxide, sulfate, and chloride. We increase the value of your business. It is not found free in nature and is present along with several rare minerals. 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. It becomes superconducting at 0.022 K (−273.128 °C, or −459.63 °F) and pressures exceeding 45 kilobars. Georges Urbain, who was french, discovered lutetium in 1907 in France. The element lutetium was named after Lutetia, the Roman name for a small town which grew to become the modern city of Paris. Who are we? Pure metal lutetium has been isolated only in recent years and is one of the more difficult to prepare. 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. SYMBOL Lu. Lutetium is found with ytterbium in gadolinite and xenotime. Three separate scientists discovered lutetium in 1907, independent of each other.
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