Skandium (latinsky Scandium) je prvek s protonovým číslem 21. Nachází se v 4. periodě a 3. skupině. Patří mezi přechodné kovy a vyskytuje se v přírodě. Při teplotě 20 °C má pevné skupenství. Periodická soustava prvků.
In Chemistry of the Elements (Second Edition), 1997. 20.2.2 Preparation and uses of the metals. Some scandium is obtained from thortveitite, which contains 35–40% Sc 2 O 3, but most is obtained as a byproduct in the processing of uranium ores which contain only about 0.02% Sc 2 O 3, and in the production of tungsten.Its applications, for instance in laser crystals and coatings, …
Scandium was discovered by Lars Fredrik Nilson, a Swedish chemist, in the year 1879. He was trying to make pure ytterbia from 10 kilograms of the mineral euxenite ((Y, Ca, Ce, U, Th)(Nb, Ta, Ti) 2 O 6).Scandium is generally found in the minerals such as thortveitite ((Sc, Y) 2 Si 2 O 7), bazzite (Be 3 (Sc, Al) 2 Si 6 O 18), and wiimote.However, the most common …
Chemical element, Scandium, information from authoritative sources. Look up properties, history, uses, and more. National Institutes of Health. National Library of Medicine. National Center for Biotechnology Information. PubChem. About. Posts. Submit. Contact. Search PubChem. Apologies, we are having some trouble retrieving data from our ...
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Neutrons: 24. Shell structure: 2,8,9,2. Electron configuration: [Ar]3d14s2. Oxidation state: 3. Crystal structure: hexagonal. A rare transition element, scandium was discovered in 1878 by L. Nilson in Scandinavia. It occurs in only trace amounts on earth, though it is much more abundant in the sun and other stars.
Scandium: Nomor atom: 21: Periode: 4: Kategori unsur: Unsur transisi: Massa atom relatif: 44,955910: Grup: III.B: Elektronegativitas: 1,3. Bilangan oksidasi: 3. Konfigurasi elektron: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 1 4s 2. Massa jenis [g/cm 3] 2,989. Keadaan: Padat. Titik lebur [°C] 1541. Titik didih [°C] 2750. Konduktivitas termal [W m-1 K-1] 15 ...
Naprašovací terč Scandium sdílí vlastnosti se svým zdrojovým materiálem. Scandium, přechodný kov se stříbřitým vzhledem, je často klasifikován jako prvek vzácných zemin bez lanthanoidů. Kov Scandium je široce používán v různých produktech, jako jsou zářivky, baseballové pálky a rámy jízdních kol. Add to Inquiry Vysoce čistý fluorid skandia
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"Scandium","Scandia"（）。1937,、700–800 °C 。 . 15（）,50%。。
PDF | On Jan 1, 2008, F. Habashi published Scandium | Find, read and cite all the research you need on ResearchGate. Article PDF Available. Scandium. January 2008; Metall 62(12):814-816;
It has a high melting point, but it is as light as aluminum. That means it has relatively low density, about 2.98g/cm 3. Its melting point is 1541 o C and boiling point is 2836 o C. Scandium chemical symbol is Sc. Its atomic number is 21 and atomic weight is 44.95g/mol.
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 Sc2O3 oxide on the surface. The metal slowly dissolves in diluted acids—except hydrofluoric acid …
Scandium | Sc | CID 23952 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. National Institutes of Health. National Library of Medicine. National Center for Biotechnology Information. PubChem ...
31. It reacts with water and forms Scandium Oxide and Hydrogen gas. Because of hydrolysis, the water solution with Sc 3+ ions is acidic. 32. In the flame test, the flame of Scandium burns bright yellow and produces Scandium Oxide (which is weak basic oxide). 33.
Scandium is a soft, silvery metallic element. Its atomic number is 21, making it the lightest of the transition metals. Scandium is not particularly rare - its occurrence in crustal rocks is 22 around ppm. This makes scandium generally more abundant than lead, mercury, and precious metals. Despite this fairly common occurrence, scandium rarely ...
Scandium is a highly effective alloying element for aluminium; small additions (0.1- 0.2%) can result in major improvements in overall performance and properties, including strength, corrosion, weldability, ductility, anodization performance and fatigue resistance. No other alloying element (s) gives the same level of multiple property ...
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Scandium is an element, often lumped together with the rare earth elements as is yttrium, but it is technically a light transition metal. It is relatively common in the earth's crust, where it readily forms as a compound oxide and tends to remain highly dispersed (low grade). Heavy weathering of surface soils can concentrate scandium, such as ...
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Interesting facts about scandium. Facts about scandium element are mentioned below. Scandium is a silvery white colored moderately soft metal. When it is kept open in the air, it reacts very slowly with oxygen to form Sc 2 O 3 and its color changes from silvery white to yellowish color. Density of scandium is approximately 3 times that of water.
World Resources: Resources of scandium are abundant. Scandium's crustal abundance is greater than that of lead. Scandium lacks affinity for the common ore-forming anions; therefore, it is widely dispersed in the lithosphere and forms solid solutions with low concentrations in more than 100 minerals. Scandium resources have been identified in
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Scandium is a chemical element with the symbol Sc and atomic number 21.. A silvery-white metallic d-block element, it has historically been classified as a rare-earth element, together with yttrium and the lanthanides.It was discovered in 1879 by spectral analysis of the minerals euxenite and gadolinite from Scandinavia.. Scandium is present in most of the deposits of …
The Kiviniemi scandium project in eastern Finland features a resource of 13.4 million tons at a grade of 163 parts per million scandium where scandium is mainly incorporated into the lattice of clinopyroxene and amphibole. In China, a large state-owned enterprise in Shanghai was producing 50 tons per year of scandium oxide raw material
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Atom number: 21; atomic weight: 44.9559; melting point: 1541°C; boiling point: 2831°C; density: 3.0 kg l-1 (3.0 g cm -3 ). Scandium is a soft, silvery-white metal which heads Group III of the Periodic Table. It tarnishes in air and burns easily once it has been ignited. Scandium powder reacts with water to form hydrogen gas, and it dissolves ...
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Scandium International Mining Corp. (SCY) is building a portfolio of technology-driven minerals projects. Our projects are targeted to the needs of a more efficient and greener global transportation sector, along with other tech applications. The term we have adopted to describe our development focus is Critical Metals Recovery.
Proč nábytek od Scandium? Prodáváme kvalitní zboží, kvalitní materiály, nadčasový design, který Vám vydrží po dlouhé roky jako nový. Nábytek, skandinávský nábytek a trendy kancelářské prostory jsou naše vášeň. Náš nábytek se dědí. Více …
