# Bond Order Formula

What is Bond order?

The bond order shows the number of chemical bonds present between a pair of atoms. For instance, the bond order of diatomic nitrogen Nâ‰¡N is 3 and bond order between the carbon atoms in H-Hâ‰¡C-H is also three. The bond order describes the stability of the bond.Â The molecular orbital provides an easy understanding of the concept of the bond order of a chemical bond. It quantifies the degree of covalent bonds between the atoms.

Â How to calculate Bond order?

The Bond Order Formula can be defined as half of the difference between the number of electrons in bonding orbitals and antibonding orbitals. Â

$\dpi{120}&space;\large&space;Bond&space;order=\frac{1}{2}\left&space;[&space;N_{b}-N_{a}&space;\right&space;]$

Where,

Nb is the number of bonding electrons

Na is the number of antibonding electrons

## Solved Example

Solution

Step 1. Write the electron configuration of C2 molecule.

Electronic configuration of C2Â = (Ïƒ2s)2Â  (Ïƒ*2s)2Â n(2px)2Â n(2py)2

Step 2. From the above electron configuration, but the values in the formula

Bond order = (Nb – Na) / 2

Â Â Â Â Â Â Â =( 8 – 4 )/ 2

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = 2