ionic bond
21Ionic radius — The ionic radius, r ion, is a measure of the size of an ion in a crystal lattice. It is measured in either picometres (pm) or Angstrom (Å), with 1 Å = 100 pm. Typical values range from 30 pm (0.3 Å) to over 200 pm (2 Å).The concept of ionic… …
22ionic bonding — a coulombic interatomic bond that exists between two adjacent and oppositely charged ions; one of the primary types of atomic bonding in ceramics …
23ionic — [ʌɪ ɒnɪk] adjective relating to ions. ↘(of a chemical bond) formed by the electrostatic attraction of oppositely charged ions. Often contrasted with covalent. Derivatives ionically adverb …
24Chemical bond — A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electromagnetic force attraction between opposite charges, either between electrons and… …
25Covalent bond — Covalent redirects here. For other uses, see Covalent (disambiguation). A covalent bond forming H2 (right) where two h …
26Hydrogen bond — A hydrogen bond results from a dipole dipole force between an electronegative atom and a hydrogen atom bonded to nitrogen, oxygen or fluorine (thus the name hydrogen bond , which must not be confused with a covalent bond to hydrogen). The energy… …
27covalent bond — Chem. the bond formed by the sharing of a pair of electrons by two atoms. [1960 65] * * * Force holding atoms in a molecule together as a specific, separate entity (as opposed to, e.g., colloidal aggregates; see bonding). In covalent bonds, two… …
28electrovalent bond — noun a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion • Syn: ↑ionic bond, ↑electrostatic bond • Hypernyms: ↑chemical bond, ↑bond * * * noun : a chemical bond… …
29Symmetric hydrogen bond — A symmetric hydrogen bond is a special type of hydrogen bond in which the proton is spaced exactly halfway between two identical atoms. The strength of the bond to each of those atoms is equal. It is an example of a 3 center 4 electron bond. This …
30chemical bond — noun Any of several attractive forces that serve to bind atoms together to form molecules See Also: banana bond, coordinate bond, covalent bond, hydrogen bond, ionic bond, metallic bond, pi bond, sigma bond …
