Chemical bond
Chemical bond
A Chemical bond (/ˈkɛmɪkəl bɒnd/) is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.
Etymology
The term "chemical bond" also refers to the symbolism used to represent the force of attraction between two atoms or ions. In this sense, the term was first used in 1916 by the American chemist Gilbert N. Lewis.
Types of Chemical Bonds
Chemical bonds include the following:
- Ionic bond: This type of bond occurs when one atom gives up one or more electrons to another atom.
- Covalent bond: This type of bond occurs when electrons are shared between atoms.
- Metallic bond: This type of bond occurs between metal atoms.
- Hydrogen bond: This is a special type of dipole-dipole attraction between molecules, not a chemical bond to a hydrogen atom.
- Van der Waals forces: These are a variety of weaker types of forces involving polar molecules.
Related Terms
External links
- Medical encyclopedia article on Chemical bond
- Wikipedia's article - Chemical bond
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