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Valence   Listen
Valence  n.  (Chem.) The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four. Note: The valence of certain elements varies in different compounds. Valence in degree may extend as high as seven or eight, as in the cases of iodine and osmium respectively. The doctrine of valence has been of fundamental importance in distinguishing the equivalence from the atomic weight, and is an essential factor in explaining the chemical structures of compounds.

Collaborative International Dictionary of English 0.48

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"Valence" Quotes from Famous Books

... to Angouleme in 1804, on his way to his consulship at Valence, he made the acquaintance of Mme. de Senonches, then Mlle. Zephirine, and had a daughter by her," added Cointet for the attorney's ear——"Yes," he continued, as Petit-Claud gave a start; "yes, and Mlle. Zephirine's marriage with M. de Senoches soon followed the birth of ...
— Eve and David • Honore de Balzac

... especially Perigueux, but it is clear that in others the existence of fine examples of Roman architecture (Fig. 168) affected the design of buildings down to and during the eleventh century. This influence may, for example, be detected in the use, in the churches at Autun, Valence, and Avignon, of capitals, pilasters, and other features closely resembling classic originals, and in the employment through a great part of Central and Northern France ...
— Architecture - Classic and Early Christian • Thomas Roger Smith

... Count Bougart of Valence made war on Count Garin of Beaucaire,—war so great, so marvelous, and so mortal that never a day dawned but always he was there, by the gates and walls and barriers of the town, with a hundred knights, ...
— The Best of the World's Classics, Restricted to Prose, Vol. VII (of X)—Continental Europe I • Various

Words linked to "Valence" :   powerfulness, univalent, multivalent, chemistry, power, valency, bivalent, biological science, monovalent

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