Scandium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. … The radii of M3+ ions in the table below indicate that the chemical properties of scandium ions have more in common with yttrium ions than with aluminium ions. This lamp is a white-light source with high color rendering index that sufficiently resembles sunlight to allow good color-reproduction with TV cameras. 21. The chemical composition of the aluminium-scandium master-alloy is 2% scandium and the balance is 99.7% aluminium. Burrell, A. Willey Lower "Aluminum scandium alloy", Last edited on 23 November 2020, at 19:57, "Atomic weights of the elements 2013 (IUPAC Technical Report)", IUPAC Recommendations, NOMENCLATURE OF INORGANIC CHEMISTRY, "The NUBASE Evaluation of Nuclear and Decay Properties", "Stellar Evolution, Nuclear Astrophysics, and Nucleogenesis", "Establishment of Scandium Recovery Operations", "Commercial Scandium Oxide Production by Sumitomo Metal Mining Co. Ltd", "NioCorp Announces Final Closing of Non-Brokered Private Placement for Aggregate Gross Proceeds of C$1.77 Million", "Long-discussed niobium mine in southeast Nebraska is ready to move forward, if it gathers $1 billion in financing ", "Mineral Commodity Summaries 2015: Scandium", "Hydrothermal Preparation of α-ScOOH and of γ-ScOOH. Chemical Characteristics. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. It has been shown to reduce solidification cracking during the welding of high strength aluminium alloys. Scandium-stabilized zirconia enjoys a growing market demand for use as a high-efficiency electrolyte in solid oxide fuel cells. 13 radioisotopes have been characterized with the most stable being 46 Sc with a half-life of 83.8 days, 47 Sc with a half-life of 3.35 days, and 48 Sc with a half-life of 43.7 hours. [28], Lower oxidation states (+2, +1, 0) have also been observed in organoscandium compounds. Phone: +971 4 429 5853 e-mail: info@lenntech.com, Copyright © 1998-2020 Lenntech B.V. All rights reserved, Peças para sistemas de tratamento de água, Planta de fábrica Inspeção e Processo Otimização. Crystal Structure of α-ScOOH", "Sur l'ytterbine, terre nouvelle de M. Marignac", Berichte der deutschen chemischen Gesellschaft, Zeitschrift für anorganische und allgemeine Chemie, "Star-wars intrigue greets scandium find", Evidence against Anomalous Compositions for Giants in the Galactic Nuclear Star Cluster, "A Novel Low-Density, High-Hardness, High-entropy Alloy with Close-packed Single-phase Nanocrystalline Structures", "Easton Technology Report: Materials / Scandium", "Green Lewis acid catalysis in organic synthesis", https://en.wikipedia.org/w/index.php?title=Scandium&oldid=990274784, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 November 2020, at 19:57. After Russian chemist Dmitry Ivanovich Mendeleyev in 1871 predicted this element’s existence, tentatively calling it ekaboron, Swedish chemist Lars Fredrik Nilson in 1879 discovered its oxide, scandia, in the rare-earth minerals gadolinite and euxenite, and Swedish chemist Per Teodor Cleve later in 1879 identified scandium as the hypothetical ekaboron. Its low density and high melting point suggest applications as an alloying agent for lightweight metals for military and high-performance applications. Its oxides … Scandium burns easily and reacts with water. [52] About 80 kg of scandium is used in metal-halide lamps/light bulbs globally per year. The blue color of the aquamarine variety of beryl is thought to be caused by scandium. Scandium is dumped in the environment in many different places, mainly by petrol-producing industries. However, titanium alloys, which are similar in lightness and strength, are cheaper and much more widely used. 1541 °C. [47] Lacrosse sticks are also made with scandium. Rank: 20 (Overall) 13. These sheets … The properties of scandium compounds are intermediate between those of aluminium and yttrium. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Only about 3% of plants that were analysed for scandium shows its presence, and even those amounts were tiny, with vegetable having only 5 ppb although grass has 70 ppb. Add ⊕ Summary; Periodic Table; Facts; Uses; Physical; Chemical; Atomic; Mechanical; Magnetic; Thermal; Properties; All; 1 Chemical. chemical properties, health and environmental effects of scandium. World production amount to only 50 kg per year. Scandium is usually found only in two different kinds of ores. The second series includes the elements yttrium (symbol Y, atomic number 39) to cadmium (symbol Cd, atomic number 48). unknown. Scandium is a soft, lightweight, silvery-white metal with the chemical symbol Sc. Scandium is one of the rare chemicals, that can be found in houses in equipment such as colour televisions, fluorescent lamps, energy-saving lamps and glasses. Scandium has no biological role. One example is the chlorine-bridged dimer, [ScCp2Cl]2 and related derivatives of pentamethylcyclopentadienyl ligands. Scandium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. Scandium easily reacts with dilute acids. Its compound mostly exists in +3 oxidation state. Scandium chemistry is almost completely dominated by the trivalent ion, Sc3+. Ca. which rely on high performance materials. Scandium is usually found only in two different kinds of ores. [39], Laser crystals of gadolinium-scandium-gallium garnet (GSGG) were used in strategic defense applications developed for the Strategic Defense Initiative (SDI) in the 1980s and 1990s. Get exclusive access to content from our 1768 First Edition with your subscription. …elements in Group 3 (scandium [Sc], yttrium [Y], and lanthanum [La]) and the first extended row of elements below the main body of the periodic table (cerium [Ce] through lutetium…, …transition series begins with either scandium (symbol Sc, atomic number 21) or titanium (symbol Ti, atomic number 22) and ends with zinc (symbol Zn, atomic number 30). Chemical properties of Scandium. It can also enter the environment when household equipment is thrown away. [37] The first pound of 99% pure scandium metal was produced in 1960. The cosmic abundance of scandium is relatively high. [35][36], Metallic scandium was produced for the first time in 1937 by electrolysis of a eutectic mixture of potassium, lithium, and scandium chlorides, at 700–800 °C. The main application by volume is in aluminium-scandium alloys for the aerospace industry and for sports equipment (bikes, baseball bats, etc.) Boiling point. Thortveitite (a scandium silicate) is the only mineral containing large amounts of scandium, about 34 percent, but unfortunately this mineral is quite rare and is not an important source of scandium. Particularly promising is the strengthening of aluminium alloys with as little as 0.5% scandium. The total electrical charge of the nucleus is therefore +Ze, where e (elementa… 2H2O has a very high scandium content but is not available in any larger deposits.[21]. The use of scandium is still growing, due to the fact that it is suited to produce catalysers and to polish glass. Updates? [55] In the light of these results, compounds of scandium should be handled as compounds of moderate toxicity. Scadium is not toxic, although there have been suggestions that some of its compounds might be cancerogenic. α- and γ-ScOOH are isostructural with their aluminium hydroxide oxide counterparts.

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