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The valence is the combining capacity of an atom of a given element, determined by the number of hydrogen atoms that it combines with. In methane, carbon has a valence of 4; in ammonia, nitrogen has a valence of 3; in water, oxygen has a valence of 2; and in hydrogen chloride, chlorine has a valence of 1. Chlorine, as it has a valence of one ...
Valence isomer. In organic chemistry, two molecules are valence isomers when they are constitutional isomers that can interconvert through pericyclic reactions. [1] [2]
Abegg's rule. In chemistry, Abegg's rule states that the difference between the maximum positive and negative valence of an element is frequently eight. The rule used a historic meaning of valence which resembles the modern concept of oxidation state in which an atom is an electron donor or receiver. Abegg's rule is sometimes referred to as ...
The use of the term in psychology entered English with the translation from German ("Valenz") in 1935 of works of Kurt Lewin.The original German word suggests "binding", and is commonly used in a grammatical context to describe the ability of one word to semantically and syntactically link another, especially the ability of a verb to require a number of additional terms (e.g. subject and ...
Bausch Health Companies Inc. (formerly Valeant Pharmaceuticals International, Inc.) is an American-Canadian multinational specialty pharmaceutical company based in Laval, Quebec, Canada. It develops, manufactures and markets pharmaceutical products and branded generic drugs, primarily for skin diseases, gastrointestinal disorders, eye health ...
Website. www.ritchievalens.com. Signature. Richard Steven Valenzuela (May 13, 1941 – February 3, 1959), [3] better known by his stage name Ritchie Valens, was an American guitarist, singer and songwriter. A rock and roll pioneer and a forefather of the Chicano rock movement, Valens died in a plane crash just eight months after his breakthrough.
Indium chalcogenides. The indium chalcogenides include all compounds of indium with the chalcogen elements, oxygen, sulfur, selenium and tellurium. (Polonium is excluded as little is known about its compounds with indium). The best-characterised compounds are the In (III) and In (II) chalcogenides e.g. the sulfides In 2 S 3 and InS.
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