Search results
Results from the WOW.Com Content Network
Tungsten(V) compounds (4 P) Tungsten(VI) compounds (3 P) Pages in category "Tungsten compounds" The following 14 pages are in this category, out of 14 total.
Tungsten (also called wolfram) [14] [15] is a chemical element; it has symbol W and atomic number 74. It is a rare metal found naturally on Earth almost exclusively as compounds with other elements. It was identified as a distinct element in 1781 and first isolated as a metal in 1783.
Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...
Tungsten compounds (9 C, 14 P) I. Isotopes of tungsten (71 P) M. Tungsten mining (1 C, 4 P) Pages in category "Tungsten" The following 10 pages are in this category ...
The crystal structure of tungsten trioxide is temperature dependent. It is tetragonal at temperatures above 740 °C, orthorhombic from 330 to 740 °C, monoclinic from 17 to 330 °C, triclinic from −50 to 17 °C, and monoclinic again at temperatures below −50 °C. [3] The most common structure of WO 3 is monoclinic with space group P2 1 /n. [2]
This is a list of common chemical compounds with chemical formulae and CAS numbers, ... europium tungsten tetraoxide: 13537-12-7 EuS: europium monosulfide: 12020-65-4
Tungsten(IV) oxide is the chemical compound with the formula W O 2. The bronze-colored solid crystallizes in a monoclinic cell. [1] The rutile-like structure features distorted octahedral WO 6 centers with alternate short W–W bonds (248 pm). [1] Each tungsten center has the d 2 configuration, which gives the material a high electrical ...
Structurally, they resemble sulfates. Six-coordinate, octahedral tungsten dominates in the polyoxotungstates. In these compounds, the W–O distances are elongated. [1] Some examples of tungstate ions: [3] HWO − 4 (hydrogentungstate) [3] polymeric W 2 O 2− 7 ions of various structures in Na 2 W 2 O 7, Li 2 W 2 O 7 and Ag 2 W 2 O 7 [4] [W 7 ...