chalcogen


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Related to chalcogen: Chalcogenide, Rare earth metals

chalcogen

[′kal·kə·jən]
(inorganic chemistry)
Any of the elements that form group 16 of the periodic table; included are oxygen, sulfur, selenium, tellurium, and polonium.
References in periodicals archive ?
Dispersion patterns of chalcogen gases in soils can therefore be used to obtain a geochemical expression of the occurrence of their parent minerals (and by inference the accompanying metals).
One further element, which occurs neither in ore minerals nor as a gas, can claim to be a cousin of the chalcogen gases.
Anomalous concentrations of several chalcogen gases have been detected over known mineralization.
Chalcogen (say: CAL-ko-gin) refers to four chemical elements in one column of the periodic table -- oxygen, sulfur, selenium and tellurium.
Several criteria have been used to choose the chalcogen precursor for the electrochemical process:
a) the chalcogen compound should be prepared from inexpensive chemicals in one synthetic step;
c) the valency of the chalcogen should be as close to zero as possible.
solid/vapor reaction between the metal oxide and elementary chalcogen to form the metal chalcogenide semiconductor.
Jacob, Novel Peptidomimetic Compounds Containing Redox Active Chalcogens and Quinones as Potential Anticancer Agents, Eur.
1993) Reaction chemistry of a tungsten disilene complex: net one atom insertion of chalcogens into [Cp.