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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 ...
Scandium is only the 50th most common element on Earth (35th most abundant element in the crust), but it is the 23rd most common element in the Sun [17] and the 26th most abundant element in the stars. [18] However, scandium is distributed sparsely and occurs in trace amounts in many minerals. [19]
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).
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Scandium is distributed sparsely and occurs in trace amounts in many minerals. [69] Rare minerals from Scandinavia [70] and Madagascar [71] such as gadolinite, euxenite, and thortveitite are the only known concentrated sources of this element, the latter containing up to 45% of scandium in the form of scandium(III) oxide. [70]
Due to longstanding pushback and controversial health studies surrounding the ingredient, many processed food manufacturers have already shifted away from using Red Dye No. 3, opting instead for ...
The cost of Super Bowl commercials continues to rise, a year after the big game set viewership records yet again.. In the weeks leading up to the game, the cost of a 30-second advertisement was up ...
Bismuth(III) iodide–BiI 3 [129] Bismuth(III) nitrate–BiN 3 O 9 [130] Bismuth(III) oxide – Bi 2 O 3 [131] Bismuth oxychloride – BiOCl [132] Bismuth pentafluoride – BiF 5 [133] Bismuth(III) sulfide– Bi 2 S 3 [134] Bismuth(III) telluride – Bi 2 Te 3 [135] Bismuth(III) telluride – Bi 2 Te 3 [135] Bismuth tribromide – BiBr 3 [136 ...