1. Education
You can opt-out at any time. Please refer to our privacy policy for contact information.

Discuss in my forum

Sigma Bond Definition

By

This shows the electron distribution in a sigma bond between two neighboring atoms.

This shows the electron distribution in a sigma bond between two neighboring atoms.

Todd Helmenstine

Definition: Sigma bonds are covalent bonds formed by direct overlapping between two adjacent atom's outermost orbitals. The single electrons from each atom's orbital combine to form an electron pair creating the sigma bond.

Sigma bonds are generally denoted by the Greek letter σ.

©2014 About.com. All rights reserved.