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- Samarium abstract "Samarium is a chemical element with symbol Sm and atomic number 62. It is a moderately hard silvery metal that readily oxidizes in air. Being a typical member of the lanthanide series, samarium usually assumes the oxidation state +3. Compounds of samarium(II) are also known, most notably the monoxide SmO, monochalcogenides SmS, SmSe and SmTe, as well as samarium(II) iodide. The last compound is a common reducing agent in chemical synthesis. Samarium has no significant biological role and is only slightly toxic.Samarium was discovered in 1879 by the French chemist Paul Émile Lecoq de Boisbaudran and named after the mineral samarskite from which it was isolated. The mineral itself was earlier named after a Russian mine official, Colonel Vasili Samarsky-Bykhovets, who thereby became the first person to have a chemical element named after him, albeit indirectly. Although classified as a rare earth element, samarium is the 40th most abundant element in the Earth's crust and is more common than such metals as tin. Samarium occurs with concentration up to 2.8% in several minerals including cerite, gadolinite, samarskite, monazite and bastnäsite, the last two being the most common commercial sources of the element. These minerals are mostly found in China, the United States, Brazil, India, Sri Lanka and Australia; China is by far the world leader in samarium mining and production.The major commercial application of samarium is in samarium-cobalt magnets, which have permanent magnetization second only to neodymium magnets; however, samarium compounds can withstand significantly higher temperatures, above 700 °C (1,292 °F), without losing their magnetic properties, due to the alloy's higher Curie point. The radioactive isotope samarium-153 is the major component of the drug samarium (153Sm) lexidronam (Quadramet), which kills cancer cells in the treatment of lung cancer, prostate cancer, breast cancer and osteosarcoma. Another isotope, samarium-149, is a strong neutron absorber and is therefore added to the control rods of nuclear reactors. It is also formed as a decay product during the reactor operation and is one of the important factors considered in the reactor design and operation. Other applications of samarium include catalysis of chemical reactions, radioactive dating and an X-ray laser.".
- Samarium wikiPageExternalLink ele062.html.
- Samarium wikiPageExternalLink samariumlowvalent.shtm.
- Samarium wikiPageID "27121".
- Samarium wikiPageLength "57795".
- Samarium wikiPageOutDegree "230".
- Samarium wikiPageRevisionID "708168217".
- Samarium wikiPageWikiLink 1,2-Diiodoethane.
- Samarium wikiPageWikiLink Activator_(phosphor).
- Samarium wikiPageWikiLink Alkyl.
- Samarium wikiPageWikiLink Alpha_decay.
- Samarium wikiPageWikiLink Aluminium_oxide.
- Samarium wikiPageWikiLink Annulation.
- Samarium wikiPageWikiLink Antiferromagnetism.
- Samarium wikiPageWikiLink Argon.
- Samarium wikiPageWikiLink Aryl.
- Samarium wikiPageWikiLink Astrophysics.
- Samarium wikiPageWikiLink Atomic_number.
- Samarium wikiPageWikiLink Band_gap.
- Samarium wikiPageWikiLink Bar_(unit).
- Samarium wikiPageWikiLink Barbier_reaction.
- Samarium wikiPageWikiLink Barn_(unit).
- Samarium wikiPageWikiLink Bastnäsite.
- Samarium wikiPageWikiLink Becquerel.
- Samarium wikiPageWikiLink Beta_decay.
- Samarium wikiPageWikiLink Bohr_magneton.
- Samarium wikiPageWikiLink Breast_cancer.
- Samarium wikiPageWikiLink Calcium_chloride.
- Samarium wikiPageWikiLink Calcium_fluoride.
- Samarium wikiPageWikiLink Carbide.
- Samarium wikiPageWikiLink Catalysis.
- Samarium wikiPageWikiLink Category:Chemical_elements.
- Samarium wikiPageWikiLink Category:Lanthanides.
- Samarium wikiPageWikiLink Category:Reducing_agents.
- Samarium wikiPageWikiLink Category:Samarium.
- Samarium wikiPageWikiLink Cerite.
- Samarium wikiPageWikiLink Cerium(IV)_oxide.
- Samarium wikiPageWikiLink Chelation.
- Samarium wikiPageWikiLink Chemical_element.
- Samarium wikiPageWikiLink Chemical_reaction.
- Samarium wikiPageWikiLink Chemical_synthesis.
- Samarium wikiPageWikiLink Control_rod.
- Samarium wikiPageWikiLink Cubic_crystal_system.
- Samarium wikiPageWikiLink Curie_temperature.
- Samarium wikiPageWikiLink Cyclooctatetraene.
- Samarium wikiPageWikiLink Cyclopentadiene.
- Samarium wikiPageWikiLink Danishefsky_Taxol_total_synthesis.
- Samarium wikiPageWikiLink Decipium.
- Samarium wikiPageWikiLink Deflectometry.
- Samarium wikiPageWikiLink Dehydrogenation.
- Samarium wikiPageWikiLink Desulfonylation_reactions.
- Samarium wikiPageWikiLink Dye_laser.
- Samarium wikiPageWikiLink EDTMP.
- Samarium wikiPageWikiLink Electric_aircraft.
- Samarium wikiPageWikiLink Electric_arc_furnace.
- Samarium wikiPageWikiLink Electrochemical_deposition.
- Samarium wikiPageWikiLink Electron_capture.
- Samarium wikiPageWikiLink Ether.
- Samarium wikiPageWikiLink Eugène-Anatole_Demarçay.
- Samarium wikiPageWikiLink Europium.
- Samarium wikiPageWikiLink Extrinsic_semiconductor.
- Samarium wikiPageWikiLink Ferrocene.
- Samarium wikiPageWikiLink Flap_structure-specific_endonuclease_1.
- Samarium wikiPageWikiLink Flint.
- Samarium wikiPageWikiLink Florencite-(Sm).
- Samarium wikiPageWikiLink France.
- Samarium wikiPageWikiLink Friedel–Crafts_reaction.
- Samarium wikiPageWikiLink Fullerene.
- Samarium wikiPageWikiLink Gadolinite.
- Samarium wikiPageWikiLink Gadolinium.
- Samarium wikiPageWikiLink Gustav_Rose.
- Samarium wikiPageWikiLink Half-life.
- Samarium wikiPageWikiLink Halogen.
- Samarium wikiPageWikiLink Heinrich_Rose.
- Samarium wikiPageWikiLink Hexagonal_crystal_system.
- Samarium wikiPageWikiLink High-temperature_superconductivity.
- Samarium wikiPageWikiLink Holmium(III)_oxide.
- Samarium wikiPageWikiLink Holography.
- Samarium wikiPageWikiLink Holton_Taxol_total_synthesis.
- Samarium wikiPageWikiLink Hydroxide.
- Samarium wikiPageWikiLink IBM.
- Samarium wikiPageWikiLink Induction_heating.
- Samarium wikiPageWikiLink Interferometry.
- Samarium wikiPageWikiLink Ion_exchange.
- Samarium wikiPageWikiLink Ionic_radius.
- Samarium wikiPageWikiLink Iron-based_superconductor.
- Samarium wikiPageWikiLink Isotope.
- Samarium wikiPageWikiLink Isotopes_of_samarium.
- Samarium wikiPageWikiLink Kilogram.
- Samarium wikiPageWikiLink Kondo_insulator.
- Samarium wikiPageWikiLink Kuwajima_Taxol_total_synthesis.
- Samarium wikiPageWikiLink Lanthanide.
- Samarium wikiPageWikiLink Lanthanide_trifluoromethanesulfonates.
- Samarium wikiPageWikiLink Lanthanum.
- Samarium wikiPageWikiLink Lewis_acids_and_bases.
- Samarium wikiPageWikiLink Lighter.
- Samarium wikiPageWikiLink Liquid–liquid_extraction.
- Samarium wikiPageWikiLink Luminous_efficacy.
- Samarium wikiPageWikiLink Lung_cancer.
- Samarium wikiPageWikiLink MacCready_Solar_Challenger.