The bond order of a molecule is given by
The difference between the number of electrons in bonding and antibonding orbitals
Total number of electrons in bonding and antibonding orbitals
Twice the difference between the number of electrons in bonding and antibonding electrons
Half the difference between the number of electrons in bonding and antibonding electrons
We know the Bond Order is Half the difference between the number of electrons in bonding and antibonding electrons.
Hence, the correct answer is Option (4)
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