In polyatomic molecules the bond energy of of similar bond may differ due to the difference in the chemical enviornment around central atom. Bond order is given by the numbers of bond between the two atoms in a molecule. Iso electronic molecules and ions will have identical orders. In general as bond orders increases and bond length decreases.
Answer the following question based on above passage :
Identify the pair which show similar bond order ?

Options

A. `O_2^-, O_2^(2-)`
B. `O_2^-, N_2`
C. `O_2^(2-), F_2`
D. `F_2, N_2`

Answer

C