co·va·lence

(kō-vā′ləns)

The number of electron pairs an atom can share with other atoms.

co·va′len·cy n.

co·va′lent adj.

co·va′lent·ly adv.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

covalency

(kəʊˈveɪlənsɪ) or

covalence

1. (Chemistry) the formation and nature of covalent bonds

2. (Chemistry) the number of covalent bonds that a particular atom can make with other atoms in forming a molecule

coˈvalent adj

coˈvalently adv

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ThesaurusAntonymsRelated WordsSynonymsLegend:

Noun

covalency - valence characterized by the sharing of electrons in a chemical compound; the number of pairs of electrons an atom can share

covalence

valence, valency - (chemistry) a property of atoms or radicals; their combining power given in terms of the number of hydrogen atoms (or the equivalent)

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References in periodicals archive

Principia's proprietary Tailored Covalency platform enables the company to design and develop reversible and irreversible covalent, small molecule inhibitors with potencies and selectivities that have the potential to rival those of injectable biologics yet maintain the convenience of a pill.

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Molecular orbital coefficients in-plane u-bonding ([[alpha].sup.2]), in-plane [pi]-bonding ([[beta].sup.2]), and out-of-plane [pi]-bonding ([[gamma].sup.2]) are the covalency parameters for the metal to ligand bond which were evaluated using the following expressions:

Synthesis and Characterization of Cobalt(III) and Copper(II) Complexes of 2-((E)-(6-Fluorobenzo[d]thiazol-2-ylimino) methyl)-4-chlorophenol: DNA Binding and Nuclease Studies--SOD and Antimicrobial Activities

Kauffman, "EPR spectra and covalency of bis(amidinourea/O-alkyl-1-amidinourea)copper(II) complexes part II.

Synthesis of Pyrazolone Derivatives and Their Nanometer Ag(I) Complexes and Physicochemical, DNA Binding, Antitumor, and Theoretical Implementations

Grabowski, "What is the covalency of hydrogen bonding?," Chemical Reviews, vol.

Does the Intramolecular Hydrogen Bond Affect the Spectroscopic Properties of Bicyclic Diazole Heterocycles?

The value of [beta] indicates that there is low covalency in the metal ligand [sigma]-band [16].

Synthesis, Spectral Characterization, and Thermal and Cytotoxicity Studies of Cr(III), Ru(III), Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) Complexes of Schiff Base Derived from 5-Hydroxymethylfuran-2-carbaldehyde

The degree of oxidation of the iron atom within these molecules determines the covalency and color of iron, that is, ferrous iron ([Fe.sup.+2]) is red, whereas ferric iron ([Fe.sup.+3]) is brown.

Human Colors--The Rainbow Garden of Pathology: What Gives Normal and Pathologic Tissues Their Color?