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Valence   Listen
noun
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 the French King, in the latter days of Henry VIII., and had received two ambassadors on his behalf at Donegal and Dungannon. These ambassadors, the Baron de Forquevaux, and the Sieur de Montluc, who subsequently became Bishop of Valence, crossing over from the west of Scotland, entered into a league, offensive and defensive, with "the princes" of Tyrconnell and Tyrowen, by which the latter bound themselves to recognize, on certain conditions, "whoever was King of France ...
— A Popular History of Ireland - From the earliest period to the emancipation of the Catholics • Thomas D'Arcy McGee

... has 98 for its atomic weight, and after reduction with stannous chloride could be oxidized by bichromate to a state corresponding to an XO{4}^{-} anion, compute the oxide, or valence, corresponding to the reduced state from the following data: 0.3266 gram of the pure element, after being dissolved, was reduced with stannous chloride and oxidized by 40 cc. of K{2}Cr{2}O{7}, of which one cc. ...
— An Introductory Course of Quantitative Chemical Analysis - With Explanatory Notes • Henry P. Talbot

... into my purse: and pleasure! worth—worth double the money by it. With what velocity, continued I, clapping my two hands together, shall I fly down the rapid Rhone, with the Vivares on my right hand, and Dauphiny on my left, scarce seeing the ancient cities of Vienne, Valence, and Vivieres. What a flame will it rekindle in the lamp, to snatch a blushing grape from the Hermitage and Cote roti, as I shoot by the foot of them! and what a fresh spring in the blood! to behold ...
— The Life and Opinions of Tristram Shandy, Gentleman • Laurence Sterne

... appearance, and keen intellect, all of which qualities he transmitted to his son. The young Count d'Orsay, when he came of age, found the Napoleonic era ended and France governed by Louis XVIII. The king gave Count d'Orsay a commission in the army in a regiment stationed at Valence in the southeastern part of France. He had already visited England and learned the English language, and he had made some distinguished friends there, among whom were ...
— Famous Affinities of History, Vol 1-4, Complete - The Romance of Devotion • Lyndon Orr

... 3 p.m., '91. Livy darling, we sailed from St. Pierre de Boef six hours ago, and are now approaching Tournon, where we shall not stop, but go on and make Valence, a City Of 25,000 people. It's too delicious, floating with the swift current under the awning these superb sunshiny days in deep peace and quietness. Some of these curious old historical towns strangely persuade me, but it is so lovely afloat that I don't stop, but ...
— Innocents abroad • Mark Twain

... fifteen miles below the city of Valence, he made a discovery. Dreamily observing the eastward horizon, he noticed that a distant blue mountain presented a striking profile outline of Napoleon Bonaparte. It seemed really a great natural wonder, and he stopped that night at the village just below, ...
— The Boys' Life of Mark Twain • Albert Bigelow Paine

... all to my personal taste, were repeated all along the road till we got to Toulon, marked by increasing animation and fervour as we got farther south, and as the population through which we passed became more and more divided by political passions. At Valence I found an enormous crowd of people, and the garrison and National Guard both under arms, while a tall lieutenant-colonel, of the 49th Regiment of the Line, insisted on my inspecting the troops ...
— Memoirs • Prince De Joinville

... eternal city, and, on the 15th of the same month, proclaimed the establishment of the Roman republic. The pope, after this deprivation of his authority, was conveyed to France as a prisoner, and died at Valence, Aug. 29, 1799. ...
— The United States in the Light of Prophecy • Uriah Smith



Words linked to "Valence" :   powerfulness, univalent, valency, multivalent, monovalent, double, bivalent, power



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