Which of the following is the most inappropriate representation of the $p-$nitrophenoxide ion?

What is resonance energy?

Resonating structures have different

Which of the following compounds does not exhibit the resonance effect?

With respect to resonance structures of $CO_3^{2-}$ ion, which of the following statements are correct?
$(a)$ All $C – O$ bonds in $CO_3^{2-}$ are equivalent
$(b)$ There are three resonance structures possible for $CO_3^{2-}$ ion
$(c)$ The position of carbon and oxygen should change in every resonance structure
$(d)$ The formal charge on carbon atom is $0$

Among the following,the least stable resonance structure is