He showed great courage and compassion as a physician during this period, and some believe his POW … The most common source of commercially produced Lutetium is the mineral monazite. FAMILY Lanthanide (rare earth metal) PRONUNCIATION loo-TEE-she-um. 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. 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. Answers to life's questions, Why are Whale Sharks an Endangered Species, How Many Countries Make up the Commonwealth. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Gastrointestinal NETcan occur in any part of the gastrointestinal tract, including the small intestine, large intestine and stomach. More history... Lutetium: isotopes. Amazingly, this metal was discovered by three separate scientists in the same year. Lutetium is used in research. The name Lutetium is derived from the Latin Lutetia, the Roman name for Paris, where it was discovered in 1907. Pure metal lutetium has been isolated only in recent years and is one of the more difficult to prepare. Your email address will not be published. For example, C… Lutetium (Lu) has an atomic number of seventy-one. Lutetium (Latin Lutetia meaning Paris) was independently discovered in 1907 by:French scientist Georges Urbain,Austrian mineralogist Baron Carl Auer von … Lutetium was discovered by scientists who were carrying out science experiments and scientific research. Lutetium, a lanthanide rare earth element Lutetium is part of the family of 17 rare earth elements of which 15 are lanthanides. Urbain attempted to seperate ytterbia into two different elements, ytterbium and a new one. Copyright © 2017. It is not found free in nature and is present along with several rare minerals. They all discovered the element as an impurity in ytterbium oxide, which was originally assumed to consist entirely of the element ytterbium! 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. Georges Urbain, who was french, discovered lutetium in 1907 in France. It was the Australian doctor, John Cade, who truly discovered lithium. One of the rarest of the rare earths, lutetium occurs in rare-earth minerals such as laterite clays, xenotime, and euxenite. It is never found in free form in nature, but is found in small amounts as a part of certain minerals. Lutetium is monomorphic and has a close-packed hexagonal structure with a = 3.5052 Å and c = 5.5494 Å at room temperature. Lire la suite Our videos. He didn't believe that ytterbia was made of only one element. ATOMIC MASS 174.97. It was found in a complex black mineral that had been found near the town of Ytterby, Sweden, in 1787. Lutetium is not an abundant element. Isotope abundances of lutetium with the most intense signal set to 100%. 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. 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. 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 also found in the products of nuclear fission. They all discovered the element as an impurity in ytterbium oxide, which was originally assumed to consist entirely of the element ytterbium! Charles James stayed out of the argument surrounding the element and instead produced the largest supply of the element. Who are we? If you have a question you can search for the answer below! Its compounds are used as hosts for scintillators and X-ray phosphors, and the oxide is used in optical lenses. Discovered by. Applications. Georges Urbain, Charles James and Carl Auer von Welsbach independently discovered lutetium from ytterbium oxide.