Most scandium compounds have scandium with the Sc 3+ ion.

Scandium is a soft, light metal that might have applications in the aerospace industry. The global trade of scandium oxide is 15–20 tonnes per year. Inhalé en trop grandes quantités, il peut être à l'origine d',Terres rares : les réserves mondiales, de la Chine à l'Afrique,Le scandium est un métal mou et léger. Nitrogen has nothing new to show us, all its constituents having appeared in,Other elements are named from countries or localities, as germanium and.In 1875 Lecoq de Boisbandram discovered gallium, which filled one of the gaps;What’s The Difference Between “i.e.” vs. “e.g.”?Why Do “Left” And “Right” Mean Liberal And Conservative?“Epidemic” vs. “Pandemic” vs. “Endemic”: What Do These Terms Mean?10 Types Of Nouns Used In The English Language.What Is The Difference Between “It’s” And “Its”?Democrats And Republicans: Why Are They Donkeys And Elephants?Are These COVID-19 Words The Worst To Come Out Of The Pandemic?“Affect” vs. “Effect”: Use The Correct Word Every Time.Absentee Ballot vs. Mail-In Ballot: Is There A Difference?Nourish your vocabulary with a refresher on the words from the week of September 14–20, 2020!an ancient Greek or Roman farce that depended for effect largely upon ludicrous actions and gestures.a check whose amount has been raised by forgery before cashing.From New Latin, dating back to 1875–80; see origin at,Dictionary.com Unabridged Thortveitite (Scandium silicate) contain 45% scandium in the form of scandium oxide but it is very rare in nature. On rejettent aussi des terres rares dans l'environnement lorsqu'on jette certains équipements ménager (télévision par exemple).


Scandium is uncommon, probably because of both the lack of rich sources and difficulties in its separation. Scandium definition, a rare, trivalent, metallic element obtained from thortveitite.

Scandium metal is a silvery-white solid with a slight pink or yellow tint when exposed to air.

It has, however, great potential because it has almost as low a density as aluminium and a much higher melting point. Scandium is a silvery metal that is soft and has a density of about three times that of water. Its density is 2.99 grams per cubic centimeter.Scandium is present in most of the deposits of rare-earth and uranium compounds, but it is extracted from these ores in only a few mines worldwide.

Symbol: Sc; atomic weight: 44.956; atomic number: 21; specific gravity: 3.0. 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.The properties of scandium compounds are intermediate between those of aluminium and yttrium. Du fait de sa faible production mondiale, il reste un élément cher. A silvery-white metallic d-block element, it has historically been classified as a rare-earth element, together with yttrium and the lanthanides.

Les dates entre parenthèses sont les dates d'annonces des découvertes.La dernière modification de cette page a été faite le 18 mars 2018 à 16:12. These lamps help television cameras to reproduce color well when filming indoors or at night-time.specific gravity: 2.989 (24 °C, or 75 °F). An element of the rare earth family of metals. Cette propriété intéresse actuellement l'industrie aéronautique. Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Scandium is a soft, light metal that might have applications in the aerospace industry. It is a rare-earth metal of Group 3 of the periodic table. It is separated from the other rare-earth by precipitation of the insoluble potassium scandium sulfate or by extraction of scandium thiocyanate by diethyl ether. Atomic number 21.A soft, silvery, very lightweight metallic element that is found in various rare minerals and is a byproduct in the processing of certain uranium ores. All rights reserved.a rare, trivalent, metallic element obtained from thortveitite.a rare light silvery-white metallic element occurring in minute quantities in numerous minerals. Scandium Element: Scandium is a silvery-white metallic d-block element. It has a high melting point and is used to make high-intensity lights. Cet élément a des propriétés chimiques intermédiaires entre celles de l',La production mondiale est faible, de l'ordre de quelques tonnes par an, et son prix élevé,En ajoutant de l'iodure de scandium dans une lampe à halogénure métallique, on obtient une source de lumière spectralement comparable au Soleil (.Le scandium possédant un point de fusion beaucoup plus élevé que celui de l'aluminium et presque aussi léger (densité 2,9) est étudié pour de possibles applications aérospatiales.Le scandium est le plus puissant des antirecristallisants connus, dans l'aluminium.
The major uses of scandium are as an alloy additive to aluminum-based alloys for sporting goods and in high-intensity metal halide lamps. The discovery of scandium filled a spot predicted by Mendeleev's periodic table. Alloys of scandium and aluminum are used in some kinds of athletic equipment, such as aluminum baseball bats, bicycle frames and lacrosse sticks. Le scandium métallique ne fut pas isolé avant 1937. Le scandium est un élément métallique mou, rare, trivalent, très léger qui devient jaunâtre ou rose lorsqu'il est exposé à l'air. Scandium is a transition metal element. Symbol: Sc; atomic no: 21; atomic wt: 44.955910; valency: 3; relative density: 2.989; melting pt: 1541°C; boiling pt: 2836°C.A highly reactive metallic element found in various rare minerals and separated as a byproduct in the processing of certain uranium ores. Elements; Scandium ; Scandium - Sc Propriétés chimiques - Effets du scandium sur la sant é - Impact du scandium sur l'environnement.