A chemical link between two atoms in which electrons are shared between them.
By Anne Marie Helmenstine, Ph.D. Definition: A single bond is a chemical link between two atoms in which electrons are shared between them. Examples: There is a single bond between the oxygen and each hydrogen in a water molecule (H 2 O). Each of the covalent bonds contains two electrons-one from a hydrogen atom and one from the oxygen atom. Both atoms share the electrons. Full Definition of SINGLE BOND. : a chemical bond in which one pair of electrons is shared by two atoms in a molecule especially when the atoms can share more than one pair of electrons — compare double bond, triple bond. Usually, a single bond is a sigma bond. An exception is the bond in diboron, which is a pi bond. In contrast, the double bond consists of one sigma bond and one pi bond, and a triple bond consists of one sigma bond and two pi bonds (Moore, Stanitski, and Jurs 396). Single bond is formed when two electrons are shared between two atoms with similar or low electronegativity difference. The two atoms can be of the same type or different types. For example, when the same atoms are joined to form molecules like Cl 2, H 2, or P 4, each atom is bonded to another by a single covalent bond. In chemistry, a single bond is a chemical bond between two atoms involving two valence electrons. That is, the atoms share one pair of electrons where the bond forms. Therefore, a single bond is a type of covalent bond.
http://chemistry.about.com/od/chemistryglossary/g/Single-Bond-Definition.htm http://www.merriam-webster.com/dictionary/single%20bond https://en.wikipedia.org/wiki/Single_bond http://www.differencebetween.com/difference-between-double-bond-and-vs-single-bond/ https://en.wikipedia.org/wiki/Single_bond
what is a single bond