Also found in: Encyclopedia, Wikipedia.
Related to chalcogen: Chalcogenide, Rare earth metals


Any of the elements appearing in Group 6a of the periodic table, sharing certain chemical properties; oxygen, sulfur, selenium, tellurium, polonium, or element 116.

[Greek khalkos, copper + -gen, since many of the important ores of copper, such as chalcopyrite, contain chalcogens.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Elements & Compounds) any of the elements oxygen, sulphur, selenium, tellurium, or polonium, of group 6A of the periodic table
[C20: from chalco(pyrite) + -gen]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Mentioned in ?
References in periodicals archive ?
Chemists look at reagents containing the less researched (compared to sulfur) chalcogen elements selenium and tellurium.
In comparison with halogen or chalcogen, it is important to bear in mind the tiny ability of the carbon for donating electrons, even though the existence of [C.sup....]H was verified and valued by theoretical calculations and experimental analyses [176].
Ternary compounds of the form AB[X.sub.3], where A and B are metal atoms and X is a halogen or a chalcogen, are exciting candidates as semiconductors for photovoltaics and other applications.
Manikanda, "Sizecontrolled synthesis of chalcogen and chalcogenide nanoparticles using protic ionic liquids with imidazolium cation," Korean Journal of Chemical Engineering, vol.
Benchouck, "Optical properties of CuAl[X.sub.2] (X=Se, Te) thin films obtained by annealing of copper, aluminum and chalcogen layers sequentially deposited," Thin Solid Films, vol.
TMDs are compounds composed of a transition metal such as molybdenum or tungsten and a chalcogen (typically sulfur, selenium or tellurium, although oxygen is also a chalcogen).
Interest in softer chalcogen (S and Se) containing complexes is rapidly increasing because of their potential application in bioinorganic and coordination chemistry [14].
Jantan et al., "Bifunctional chalcogen linkers for the stepwise generation of multimetallic assemblies and functionalized nanoparticles," Inorganic Chemistry, vol.
Vargas-Baca's own interest was with other heavy elements, specifically those in Group 16 of the periodic table known as the chalcogens. His work revealed examples of cyclic molecules that formed automatically when single tellurium-oxygen chalcogen bonds took the place of hydrogen bonds, a process unlike anything seen in halogen bonding.
For example, in the A-B intraverbal, the antecedent stimuli were, "Name the boron [-group] element" and the correct response was "indium"; in the B-C intraverbal, the antecedent stimuli were "Name the atomic number of the indium" and the correct response was "49." The other two A-B and B-C intraverbals were analogous, referred to the chalcogen group, polonium, and the atomic number 84.