English definition of Valence

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Definition of valence

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Valence (n.) 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..

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Epoch :: Epoch (n.) A division of time characterized by the prevalence of similar conditions of the earth; commonly a minor division or part of a period.

Chloric :: Chloric (a.) Pertaining to, or obtained from, chlorine; -- said of those compounds of chlorine in which this element has a valence of five, or the next to its highest; as, chloric acid, HClO3..

Equivalence :: Equivalence (n.) Equal power or force; equivalent amount.

Triad :: Triad (n.) An element or radical whose valence is three.

Vanadic :: Vanadic (a.) Pertaining to, or obtained from, vanadium; containing vanadium; specifically distinguished those compounds in which vanadium has a relatively higher valence as contrasted with the vanadious compounds; as, vanadic oxide..

Iridic :: Iridic (a.) Of or pertaining to iridium; -- said specifically of those compounds in which iridium has a relatively high valence.

Ferric :: Ferric (a.) Pertaining to, derived from, or containing iron. Specifically (Chem.), denoting those compounds in which iron has a higher valence than in the ferrous compounds; as, ferric oxide; ferric acid..

Monovalent :: Monovalent (a.) Having a valence of one; univalent. See Univalent.

Prevalence :: Prevalence (n.) The quality or condition of being prevalent; superior strength, force, or influence; general existence, reception, or practice; wide extension; as, the prevalence of virtue, of a fashion, or of a disease; the prevalence of a rumor..

Roturier :: Roturier (n.) A person who is not of noble birth; specif., a freeman who during the prevalence of feudalism held allodial land..

Hypo- :: Hypo- () A prefix denoting that the element to the name of which it is prefixed enters with a low valence, or in a low state of oxidization, usually the lowest, into the compounds indicated; as, hyposulphurous acid..

Warm :: Warm (superl.) Subject to heat; having prevalence of heat, or little or no cold weather; as, the warm climate of Egypt..

Tetravalent :: Tetravalent (a.) Having a valence of four; tetratomic; quadrivalent.

Pentad :: Pentad (a.) Having the valence of a pentad.

Telluric :: Telluric (a.) Of or pertaining to tellurium; derived from, or resembling, tellurium; specifically, designating those compounds in which the element has a higher valence as contrasted with tellurous compounds; as, telluric acid, which is analogous to sulphuric acid..

Atomicity :: Atomicity (n.) Degree of atomic attraction; equivalence; valence; also (a later use) the number of atoms in an elementary molecule. See Valence.

Platinic :: Platinic (a.) Of, pertaining to, or containing, platinum; -- used specifically to designate those compounds in which the element has a higher valence, as contrasted with the platinous compounds; as, platinic chloride (PtCl4)..

Prevalency :: Prevalency (n.) See Prevalence.

Palladic :: Palladic (a.) Of, pertaining to, or derived from, palladium; -- used specifically to designate those compounds in which the element has a higher valence as contrasted with palladious compounds..

Dyad :: Dyad (a.) Having a valence or combining power of two; capable of being substituted for, combined with, or replaced by, two atoms of hydrogen; as, oxygen and calcium are dyad elements. See Valence..