Lutetium is a chemical element with the symbol Lu and atomic number 71. Source: Jensan … The most stable of them are lutetium-177m, with a half-life of 160.4 days, and lutetium-174m, with a half-life of 142 days; these are longer than the half-lives of the ground states of all radioactive lutetium isotopes except lutetium-173, 174, and 176. Lutetium is not a particularly abundant element, although it is significantly more common than silver in the earth's crust. Atomic number High = substitution not possible or very difficult. You may not further copy, alter, distribute or otherwise use any of the materials from this Site without the advance, written consent of the RSC. Lutetium is little used outside research. The number of atoms of the element per 1 million atoms of the Earth’s crust. If you are in any doubt, please ask. [16], The element also has 42 nuclear isomers, with masses of 150, 151, 153–162, 166–180 (not every mass number corresponds to only one isomer). Three separate scientists discovered lutetium in 1907, independent of each other. [13], Similarly to the other rare-earth metals, lutetium has no known biological role, but it is found even in humans, concentrating in bones, and to a lesser extent in the liver and kidneys. Do not pipet from container. All such documents and related graphics are provided "as is" without any representation or endorsement made and warranty of any kind, whether expressed or implied, including but not limited to the implied warranties of fitness for a particular purpose, non-infringement, compatibility, security and accuracy. The soluble salts, such as nitrate, sulfate and acetate form hydrates upon crystallization. Lutetium is the last of its family and the smallest. The percentage of an element produced in the top producing country. All the lanthanides took a long while to be discovered. Having said that, it is more abundant in the earth than elements like silver or gold, or the platinum metals. The description of the element in its natural form. Visualize trends, 3D orbitals, isotopes, and mix compounds. Several rare earth metals, including lutetium, are separated as a double salt with ammonium nitrate by crystallization. View Nuclear Periodic Table View Isotopic & Isomeric Data . In common with many other lanthanides, the main source of lutetium is the mineral monazite. If you wish to use the Images in a manner not permitted by these terms and conditions please contact the Publishing Services Department by email. Storage & Handling: Keep tightly sealed when not in use.Store and use at 20 ± 4°C. These values were determined using several different methods. The latter one, lutetium-176, decays via beta decay with a half-life of 3.78×1010 years; it makes up about 2.5% of natural lutetium. Data for this section been provided by the. It is one of the rarest and most expensive of the rare earth metals with the price about US$10,000 per kilogram, or about one-fourth that of gold. Copyright of and ownership in the Images reside with Murray Robertson. This is calculated by combining the scores for crustal abundance, reserve distribution, production concentration, substitutability, recycling rate and political stability scores. Each allotrope has different physical properties. He chose the name lutecium for the new element, but in 1949 the spelling of element 71 was changed to lutetium. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game! Lutetium: 7439-94-3: Hangzhou Dayangchem Co., Ltd. Inquiry: Lutetium: 7439-94-3: Chemwill Asia Co., Ltd. Inquiry: Lutetium: 7439-94-3: … It is radioactive with a half-life of about 3 x 10 10 years. Images © Murray Robertson 1999-2011 But did you know it was named after a very famous capital city? Chemical Elements A Virtual Museum ... Ultrapure piece of lutetium, 3 grams. Lutetium is the last element in the lanthanide series, and it is traditionally counted among the rare earths. There is more than a hundred times more cerium, the most abundant lanthanide, in the earth than there is lutetium, the least abundant. The spelling of the element was changed in 1949 from lutecium to lutetium. Or it could be the last of the lanthanides - lutetium. [35][36] Lutetium aluminium garnet (LuAG) is used as a phosphor in LED light bulbs. [22][23][24][25][26], The International Commission on Atomic Weights, which was then responsible for the attribution of new element names, settled the dispute in 1909 by granting priority to Urbain and adopting his names as official ones, based on the fact that the separation of lutetium from Marignac's ytterbium was first described by Urbain;[19] after Urbain's names were recognized, neoytterbium was reverted to ytterbium. Lutetium is element number 71 and has the chemical symbol Lu. A horizontal row in the periodic table. Secondly elements with even atomic numbers, like ytterbium, are more abundant than elements with odd atomic numbers, such as lutetium. [27] This later misled Urbain into thinking that he had discovered element 72, which he named celtium, which was actually very pure lutetium. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). So keep your eyes peeled for lutetium popping up in medicine and our industries in the future. Each allotrope has different physical properties. A percentile rank for the political stability of the country with the largest reserves, derived from World Bank governance indicators. Sublimation A short film about the chemistry of Lutetium, presented by The Periodic Table of Videos. The availability of suitable substitutes for a given commodity. Our lutetium page has over 200 facts that span 74 different quantities. 4f14. Lutetium is the last chemical element in the lanthanide series of periodic table. First Ionization Energy (523.6 kJ/mole) Second Ionization Energy (1340 kJ/mole) Third Ionization Energy (2022 kJ/mole) Electronegativity (1.27) Electron Affinity Group [5] All of these researchers found lutetium as an impurity in the mineral ytterbia, which was previously thought to consist entirely of ytterbium. Pornographic, defamatory, libellous, scandalous, fraudulent, immoral, infringing or otherwise unlawful use of the Images is, of course, prohibited. [27] Charles James, who stayed out of the priority argument, worked on a much larger scale and possessed the largest supply of lutetium at the time. Uncombined elements have an oxidation state of 0. Interactive periodic table with up-to-date element property data collected from authoritative sources. It took me two years but eventually I managed to make compounds of lutetium, and also ytterbium. Fully descriptive writeups. The oxides are dissolved in nitric acid that excludes one of the main components, cerium, whose oxide is insoluble in HNO3. 1. The tendency of an atom to attract electrons towards itself, expressed on a relative scale. Chemical Compatibility: Moderately soluble in HCl, HNO 3, H 2 SO 4, and HF aqueous matrices and very soluble in NH 4 OH. 177Lu-DOTA-TATE is used for radionuclide therapy (see Nuclear medicine) on neuroendocrine tumours. In such cases we would ask you to sign a Visual Elements licence agreement, tailored to the specific use you propose. These blocks are named for the characteristic spectra they produce: sharp (s), principal (p), diffuse (d), and fundamental (f). The number of protons in an atom. The role of the element in humans, animals and plants. The oxalates are converted to oxides by annealing. Naturally occurring isotopes This table shows information about naturally occuring isotopes , their atomic masses , their natural abundances , their nuclear spins , and their … Identity CAS Number: 7439-94-3 CID Number: CID23929. CAS number Electron configuration The pure metal has been isolated only in recent years and … Density (g cm−3) Lutetium is soluble in water and forms a compound with water molecules. [40] Indeed, lutetium-177 is seeing increased usage as a radionuclide in neuroendrocine tumor therapy and bone pain palliation. Some elements exist in several different structural forms, called allotropes. The arrangements of electrons above the last (closed shell) noble gas. This week: an element that was worth the wait. Lutetium is found with ytterbium in gadolinite and xenotime. And the problem is not just making the new element but also figuring out what you've got at the end. The percentage of the world reserves located in the country with the largest reserves. Lutetium is element number 71 and has the chemical symbol Lu. Extra videos -- Our YouTube Channel -- Sixty Symbols (physics) -- Numberphile (maths) -- Facebook -- Twitter -- Email The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from different languages and naming systems. Murray Robertson is the artist behind the images which make up Visual Elements. Lutetium atoms have 71 electrons and the shell structure is 2.8.18.32.9.2. [29] The main mining areas are China, United States, Brazil, India, Sri Lanka and Australia. [28] Pure lutetium metal is very difficult to prepare. Partly because neighbouring lanthanides tend to be very, very similar chemically, making them hard to separate. Lutetium triflate has also been found to be a very effective recyclable catalyst for organic synthesis in aqueous systems - it avoids the use of organic solvents, giving it green credentials - but because of its cost, it will never be as popular as the triflates of some other lanthanides. D. Advertisement. But it could also be cobalt, because cobalt is used to make the blue colour in many of my favourite stained glass windows in churches and cathedrals. A measure of the propensity of a substance to evaporate. [16], Lutetium, derived from the Latin Lutetia (Paris), was independently discovered in 1907 by French scientist Georges Urbain, Austrian mineralogist Baron Carl Auer von Welsbach, and American chemist Charles James. The resulting compound is known to absorb water and carbon dioxide, and it may be used to remove vapors of these compounds from closed atmospheres. It is given by the ratio of the pressure on a body to the fractional decrease in volume. Half of the distance between two atoms within a single covalent bond. Its principal commercial source is as a by-product from the processing of the rare earth phosphate mineral monazite (Ce,La,...)PO4, which has concentrations of only 0.0001% of the element,[13] not much higher than the abundance of lutetium in the Earth crust of about 0.5 mg/kg. This is summarised in what is called the Oddo-Harkins rule, which sounds like something out of a Tolkien novel. The mass of an atom relative to that of carbon-12. Medium = substitution is possible but there may be an economic and/or performance impact Relative atomic mass [7], A lutetium atom has 71 electrons, arranged in the configuration [Xe] 4f145d16s2. The atomic number of each element increases by one, reading from left to right. 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. You're listening to Chemistry in its element brought to you by. [10], Lutetium's compounds always contain the element in the oxidation state +3. These are experiments of extraordinary subtlety and complexity. Lutetium was independently discovered in 1907 by French scientist Georges Urbain, Austrian mineralogist Baron Carl Auer von Welsbach, and American chemist Charles James. 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. Lutetium is sometimes considered the first element of the 6th-period transition metals, although lanthanum is more often considered as such. It is defined as the equilibrium pressure exerted by the gas produced above a substance in a closed system. The atomic number of protons and neutrons in the earth than elements like silver or gold, the. Solid to the gas produced above a substance directly from the solid to the fractional decrease in.. 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