Question

Which of the following options represents the incorrect bond order ?

• A. $C{O}_3^{-2}=1.33$
• B. $O_3=1.5$
• C. $O_2^{-}=2.0$
• D. $C{N}^{-}=3.0$

Answer 1

The correct option is C $O_2^{-}=2.0$

The correct bond order of is $O_2^{-}=1.5$

For both $O_3$ and $C{O}_3^{-2}$, bond order is calculated as follows,
Bond order = $\frac{No.ofbonds}{No.ofresonatingstructures}$