Question

Define the term $\sigma (sigma)$ bond.

Answer 1

Valence bond and molecular orbital theories are used toexplain chemical bonding. ... Asigma bond([latex]\sigma[/latex]) forms when two atomic orbitals overlap between the nuclei of two atoms (also known as the internuclear axis).

Answer 2

A sigma bond is a bond formed due to head on overlapping of two s-s or s-p orbitals