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covalent bond
 covalent bondIn a water molecule, each hydrogen atom (H) shares an electron (yellow) with the oxygen atom (O).covalent bondn. A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms.covalent bond n (Chemistry) a type of chemical bond involving the sharing of electrons between atoms in a molecule, esp the sharing of a pair of electrons by two adjacent atoms cova′lent bond′
n. the bond formed by the sharing of a pair of electrons by two atoms. [1960–65] ![]() covalent bondCovalent bonding as seen in a hydrogen chloride molecule. The hydrogen atom (H) shares an electron (yellow) with the chloride atom (Cl).co·va·lent bond (kō-vā′lənt) A chemical bond formed when electrons are shared between two atoms. Usually each atom contributes one electron to form a pair of electrons that are shared by both atoms. See more at bond, coordinate bond, double bond, ionic bond.Thesaurus| Noun | 1. | covalent bond - a chemical bond that involves sharing a pair of electrons between atoms in a moleculebond, chemical bond - an electrical force linking atomsdouble bond - a covalent bond in which two pairs of electrons are shared between two atomscoordinate bond, dative bond - a covalent bond in which both electrons are provided by one of the atoms |
Translationscovalent bond
covalent bond (kō'vā`lənt): see chemical bondchemical bond,
mechanism whereby atoms combine to form molecules. There is a chemical bond between two atoms or groups of atoms when the forces acting between them are strong enough to lead to the formation of an aggregate with sufficient stability to be regarded as an
..... Click the link for more information. .Covalent Bond a chemical bond between two atoms that is formed by a shared electron pair (one electron from each atom). Covalent bonds exist both in molecules (in all states of aggregation) and between the atoms that form crystal lattices. They may unite like atoms (in H2 and C12 molecules and diamond crystals) or unlike atoms (in water molecules and crystals of carborundum, SiC). Almost all the main bonds in the molecules of organic compounds are covalent (C—C, C—H, C—N, and so on). Covalent bonds are very strong, which explains the low chemical activity of paraffin hydrocarbons. Many inorganic compounds whose crystals have an atomic lattice (that is, are formed by a covalent bond) are refractory and characterized by great hardness and wear resistance; among them are certain carbides, suicides, borides, and nitrides (particularly borazone, BN), which are widely used in modern technology. V. A. KIREEV covalent bond[kō′vā·lənt ′bänd] (chemistry) A bond in which each atom of a bound pair contributes one electron to form a pair of electrons. Also known as electron pair bond. covalent bond
bond [bond] the linkage between atoms or radicals of a chemical compound, or the symbol representing this linkage and indicating the number and attachment of the valencies of an atom in constitutional formulas, represented by a pair of dots or a line between atoms, e.g., H—O—H, H—C≡C—H or H:O:H, H:C:::C:H.coordinate covalent bond a covalent bond in which one of the bonded atoms furnishes both of the shared electrons.covalent bond a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond), or three pairs of electrons (triple bond).disulfide bond a strong covalent bond, —S—S—, important in linking polypeptide chains in proteins, the linkage arising as a result of the oxidation of the sulfhydryl (SH) groups of two molecules of cysteine.high-energy phosphate bond an energy-rich phosphate linkage present in adenosine triphosphate (ATP), phosphocreatine, and certain other biological molecules. On hydrolysis at pH 7 it yields about 8000 calories per mole, in contrast to the 3000 calories yielded by phosphate esters. The bond stores energy that is used to drive biochemical processes, such as the synthesis of macromolecules, contraction of muscles, and the production of the electrical potentials for nerve conduction.high-energy sulfur bond an energy-rich sulfur linkage, the most important of which occurs in the acetyl-CoA molecule, the main source of energy in fatty acid biosynthesis.hydrogen bond a weak, primarily electrostatic, bond between a hydrogen atom bound to a highly electronegative element (such as oxygen or nitrogen) in a given molecule, or part of a molecule, and a second highly electronegative atom in another molecule or in a different part of the same molecule.ionic bond a chemical bond in which electrons are transferred from one atom to another so that one bears a positive and the other a negative charge, the attraction between these opposite charges forming the bond.peptide bond the —CO—NH— linkage formed between the carboxyl group of one amino acid and the amino group of another; it is an amide linkage joining amino acids to form peptides.FinancialSeebondcovalent bond
Related to covalent bond: nonpolar covalent bond, Noncovalent bondWords related to covalent bondnoun a chemical bond that involves sharing a pair of electrons between atoms in a moleculeRelated Words- bond
- chemical bond
- double bond
- coordinate bond
- dative bond
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