Any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar compounds of everyday life is referred to as chemical bonding.
A chemical bond is a chemical attraction between atoms, ions, or molecules that allows chemical compounds to develop.
Sigma bond as a primary bond:
The axial overlapping of atomic orbitals results in the formation of a sigma bond.
The Sigma bond is the most basic type of bond that is generated during the formation of compounds.
They are generated by head-to-head atomic orbitals' overlapping.
The overlapping is greatest in the sigma bond.
Since a sigma bond is the first bond that can be created between two atoms when they interact with each other. Therefore, a sigma bond is a primary bond.
