Ncert Exercises & Solutions

Which of the following have identical bond order?

1. ${CN}^{-}$

2. ${NO}^{+}$

3. $O_{2}^{-}$

4. $O_{2}^{2 -}$

(a, b)

{CN}^{-}

(number of electrons=6+7+1=14)

{NO}^{+}

(number of electrons=7+8-1=14)

O_{2}^{-}

(number of electrons=8+8+1=17)

O_{2}^{2 -}

(number of electrons=8+8+2=18)

Thus,

{CN}^{-}

and

{NO}^{+}

because of the presence of same number of electrons, have same bond order.