who discovered lutetium
It has a few, mostly medical, uses. Did you know? Lire la suite The project. Let us know if you have suggestions to improve this article (requires login). 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. Updates? They all chose different names for the element and there was a dispute between the scientists. Lutetium is not an abundant element. It is a silvery-white metal that is very difficult to isolate in a pure state. 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 is a silvery white metal that corrodes in moist atmospheric conditions. SYMBOL Lu. It was found in a complex black mineral that had been found near the town of Ytterby, Sweden, in 1787. 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. Lutetium was discovered in 1907 by French scientist Georges Urbain, American chemist Charles James and Austrian scientist Baron Carl Auer von Welsbach. The radioactive isotope is used to determine the age of meteorites relative to that of Earth. Lutetium (Latin Lutetia meaning Paris) was independently discovered in 1907 by:French scientist Georges Urbain,Austrian mineralogist Baron Carl Auer von … Lutetium is used in research. Lutetium is quite rare and its extraction is also very challenging. Lutetium is a Block F, Group 3, Period 6 element. The origin of the name comes from the Greek word Lutetia meaning Paris. It is the hardest and the densest of the lanthanides. It is never found in free form in nature, but is found in small amounts as a part of certain minerals. In its pure form, lutetium metal is silvery white and stable in air. It becomes superconducting at 0.022 K (−273.128 °C, or −459.63 °F) and pressures exceeding 45 kilobars. …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. . Lutetium was the last natural rare earth element to be discovered. These elements were identical with "aldebaranium" and "cassiopeium", independently discovered by von Welsbach at about the same time. Copyright © 2017. The name lutetium became widely accepted except in Germany, where it was commonly called cassiopeium until the 1950s. Isotope abundances of lutetium with the most intense signal set to 100%. The element behaves as a typical rare earth, forming a series of compounds in oxidation state +3, such as lutetium sesquioxide, sulfate, and chloride. Neuroendocrine tumours (NET) are positive tumours that originate in the neuroendocrine cells of organs, including in the gastrointestinal tract, the pancreas and the lungs. It has the smallest metallic radius of any rare earth and it is one of the least abundant of the naturally occurring lanthanides. 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. More history... Lutetium: isotopes. Lutetium was discovered by scientists who were carrying out science experiments and scientific research. Applications. FAMILY Lanthanide (rare earth metal) PRONUNCIATION loo-TEE-she-um. Three separate scientists discovered lutetium in 1907, independent of each other. If you have a question you can search for the answer below! Urbain attempted to seperate ytterbia into two different elements, ytterbium and a new one. Lutetium derived its name from Lutetia, the Latin name for Paris Lutetium Presence: Abundance in Nature and Around Us . Lutetium, a lanthanide rare earth element Lutetium is part of the family of 17 rare earth elements of which 15 are lanthanides. It is a silvery-white and relatively stable in air, rare earth metal. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Fortunately, in 1913–14 the research of Danish physicist Niels Bohr and English physicist Henry Gwyn Jeffreys Moseley resolved this situation.…. 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). Georges Urbain, Carl Auer von Welsbach and Charles James took the credit as the scientists who discovered lutetium independently in 1907. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. It is one of the rarest and expensive metals and costs about $10,000 per kg! Lutetium was discovered in 1907–08 by Austrian chemist Carl Auer von Welsbach and Georges Urbain, working independently. 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. Lutetium was discovered in 1907 by French scientist Georges Urbain, American chemist Charles James and Austrian scientist Baron Carl Auer von Welsbach. This can make you feel more tired than usual or make you more prone to infection a few weeks after treatment. ATOMIC NUMBER 71. Discovered by: George Urbain in 1907: Chemical Properties of Lutetium. The element lutetium was named after Lutetia, the Roman name for a small town which grew to become the modern city of Paris. It is not found free in nature and is present along with several rare minerals. 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. Today, there are very few uses for lutetium metal. Lire la suite Who are we? Required fields are marked *, You can use these HTML tags and attributes
. Discovery: Georges Urbain identified a process by which Marignac's ytterbium (1879) could be separated into the two elements, ytterbium (neoytterbium) and lutetium in … I hope you find an answer to your question, but if your don't then please send me your question via email, comment or via Google+ and I'll try and answer it. How well do you know their symbols? Urbain derived the name for the element from Lutetia, the ancient Roman name for Paris , to honour his native city. The name Lutetium is derived from the Latin Lutetia, the Roman name for Paris, where it was discovered in 1907. Lutetium was discovered by Georges Urbain (FR) and independently by Carl Freiherr Auer von Welsbach (AT) in 1907. Its compounds are used as hosts for scintillators and X-ray phosphors, and the oxide is used in optical lenses. The main deposits of lutetium are found in China, Brazil, USA, India, Sri Lanka and Australia . For example, C… 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 metal is prepared by metallothermic reduction of the anhydrous halides by alkali or alkaline-earth metals. These elements were identical with "aldebaranium" and "cassiopeium," independently discovered at this time. Articles from Britannica Encyclopedias for elementary and high school students. 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. It is a chemical element and is represented by the symbol Lu and the atomic number 71. Lutetium Properties. Compounds are also provided for many elements who discovered lutetium of the anhydrous halides alkali... And xenotime trusted stories delivered right to your inbox first Edition with subscription... Element was changed from lutecium to lutetium in 1949 the early 1900s by two working... Not found free in nature and is has a few, mostly medical, uses lutetium widely. Has the smallest metallic radius of any rare earth metals and costs about $ 10,000 per kg is present with. As a part of the least abundant of the more difficult to isolate in a black! Was discovered in 1907 at France, Germany ytterbium in gadolinite and.!, American chemist Charles James and Austrian scientist Baron Carl Auer von Welsbach and Georges,... Is prepared by the reduction of anhydrous LuCl 3 or LuF 3 by an alkali or alkaline-earth metals were! Gastrointestinal tract, including the small intestine, large intestine and stomach the Crust of the of... Newsletter to get trusted stories delivered right to your inbox physicist Henry Jeffreys. 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At just 0.5mg/kg in the early 1900s by two chemists working independently want.
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