Carbon monoxide has ten bonding electrons and four antibonding electrons. Therefore it has a bond order of
The bond order of carbon monoxide can be calculated using the following formula:
Bond order = 1/2[(number of bonding electrons) - (number of antibonding electrons)]
Using the given values, the bond order of carbon monoxide is:
Bond order = 1/2[(10) - (4)]
Bond order = 1/2[6]
Bond order = 3
Therefore, the bond order of carbon monoxide is 3.