What is meant by the term bond order? Calculate the bond order of: 

Bond order is defined as one-half of the difference between the number of electrons present in the bonding and anti-bonding orbitals of the molecule.
If N_a is equal to the number of electron in an antibonding orbital, then
Nb is equal to the number of electron in a bonding orbital.
1/2(N_b-N_a)

If N_b>N_a, then the molecule is said to stable. However, if N_b