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Scandium(III) oxide or scandia is a inorganic compound with formula Sc 2 O 3.It is one of several oxides of rare earth elements with a high melting point.It is used in the preparation of other scandium compounds as well as in high-temperature systems (for its resistance to heat and thermal shock), electronic ceramics, and glass composition (as a helper material).
Scandium-stabilized zirconia enjoys a growing market demand for use as a high-efficiency electrolyte in solid oxide fuel cells. [citation needed] The USGS reports that, from 2015 to 2019 in the US, the price of small quantities of scandium ingot has been $107 to $134 per gram, and that of scandium oxide $4 to $5 per gram. [34]
In all four halides, the scandium is 6-coordinated. They can be prepared by reacting scandium oxide or scandium hydroxide with the corresponding acid: [3] Sc(OH) 3 + 3 HX → ScX 3 + 3 H 2 O. The halides are Lewis acids; for example, ScF 3 dissolves in a solution containing excess fluoride ion to form [ScF 6] 3−. The coordination number 6 is ...
Praseodymium orthoscandate is a green solid. It has an orthorhombic perovskite-type crystal structure with space group Pnma (space group No. 62). [1]In 2021, with the help of electron ptychography, researchers were able to achieve the highest magnification.
Kangite is an exceedingly rare scandium mineral, a natural form of impure scandium oxide (Sc 2 O 3), with the formula (Sc,Ti,Al,Zr,Mg,Ca, ) 2 O 3. It crystallizes in the cubic crystal system diploidal class. [1] In terms of chemistry it scandium-analogue of tistarite. Both kangite and tistarite were discovered in the Allende meteorite. [2] [1 ...
Scandium acetate is a compound, with the chemical formula of Sc(CH 3 COO) 3. It exists in the anhydrous and the hydrate forms. It can be obtained by reacting scandium hydroxide or scandium oxide with acetic acid. [1] [2] It is a colorless, water-soluble solid. It decomposes into scandium oxide at high temperature.
Scandium is present in many ixiolite sample with percentages up to 4.0 percent Sc 2 O 3, but usually less than one percent scandium oxide. High scandium ixiolites, containing from 4 to 19% scandium oxide are typically also rich in tin and titanium.
"Tiến Quân Ca" (lit. "The Song of the Marching Troops") is the national anthem of Vietnam.The march was written and composed by Văn Cao in 1944, and was adopted as the national anthem of the Democratic Republic of Vietnam in 1946 (as per the 1946 constitution) and subsequently the Socialist Republic of Vietnam in 1976 following the reunification of Vietnam.