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scandium    
n. 金屬元素之一,符號為Sc,原子序為21

金屬元素之一,符號為Sc,原子序為21

scandium
n 1: a white trivalent metallic element; sometimes classified in
the rare earth group; occurs in the Scandinavian mineral
thortveitite [synonym: {scandium}, {Sc}, {atomic number 21}]

Scandium \Scan"di*um\, n. [NL. So called because found in
Scandinavian minerals.] (Chem.)
A rare metallic element of the boron group, whose existence
was predicted under the provisional name {ekaboron} by means
of the periodic law, and subsequently discovered by spectrum
analysis in certain rare Scandinavian minerals (euxenite and
gadolinite). It has not yet been isolated. Symbol Sc. Atomic
weight 44.
[1913 Webster]


Ekabor \Ek"a*bor`\ ([e^]k"[.a]*b[=o]r`), Ekaboron \Ek"a*bo"ron\
(-b[=o]"r[o^]n), n. [G., fr. Skr. [=e]ka one G. bor, boron,
E. boron.] (Chem.)
The name given by Mendelejeff in accordance with the periodic
law, and by prediction, to a hypothetical element then
unknown, but since discovered and named {scandium}; -- so
called because it was a missing analogue of the boron group.
See {Scandium}.
[1913 Webster]

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  • Scandium - Wikipedia
    Scandium is a chemical element; it has symbol Sc and atomic number 21 It is a silvery-white metallic d-block element Historically, it has been classified as a rare-earth element, [9] together with yttrium and the lanthanides It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia [10]
  • Scandium | Chemical Element, Properties, Uses | Britannica
    scandium (Sc), chemical element, a rare-earth metal of Group 3 of the periodic table Scandium is a silvery white, moderately soft metal It is fairly stable in air but will slowly change its colour from silvery white to a yellowish appearance because of formation of Sc 2 O 3 oxide on the surface
  • Scandium - Element information, properties and uses | Periodic Table
    Scandium is very widely distributed, and occurs in minute quantities in over 800 mineral species It is the main component of the very rare and collectable mineral thortveitite, found in Scandinavia Scandium can be recovered from thortveitite or extracted as a by-product from uranium mill tailings (sandy waste material)
  • What is Scandium Used For? | Scandium
    Scandium, symbolized by ‘Sc’ with an atomic number of 21, is a rare and unique metal Lars Fredrik Nilson discovered it in 1879 in Scandinavia, and the element was named after the region Although scandium is the 50th most abundant element on Earth, it occurs in trace amounts in over 800 minerals
  • Scandium | History, Uses, Facts, Physical Chemical Characteristics
    Scandium was discovered by Lars Fredik Nilson in 1879 It is a transition element and is widely used as aluminum-scandium alloy for minor aerospace industry The existence of scandium was predicted by Dmitri Mendeleev when he organized the elements in the periodic table
  • Scandium Facts, Symbol, Discovery, Properties, Uses - Chemistry Learner
    It does not occur freely in nature, but associated with more than 800 minerals, commonly found in thortveitite, found in Scandinavia, from where it is extracted as a byproduct of uranium mill tailings
  • Scandium (Sc) Element: Properties, Uses, Toxic Effects - Science Info
    Scandium is the chemical element that belongs to the group 3 of the periodic table It is classified as the transition and rare earth metal which is represented by the symbol ‘Sc’ and has the atomic number 21 in the periodic table The name comes from the Latin word ‘ Scandia,’ meaning Scandinavia
  • Scandium Facts - Science Notes and Projects
    Scandium is a silvery-white relatively light and soft metal at room temperature When exposed to air, pure scandium develops a pink-yellow oxidation layer Scandium is used in alloys much like aluminum
  • Comprehensive Guide to Scandium: Properties, Uses, and Applications
    Dive deep into the world of Scandium—a rare, yet invaluable element in the aerospace and aluminum industries Learn about its physical and chemical properties, abundant sources, and wide-ranging applications in industrial, medical, and everyday contexts
  • An Overview of Scandium (Sc or Element 21) - ThoughtCo
    Learn about the element scandium, otherwise known as Sc or element 21 on the periodic table of elements Discover chemical, physical properties plus more





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