Question

List the following in order of decreasing delocalization energy:

Short answer

Order of decreasing delocalization energy:

Delocalization of energy: -It is the extra stabilization energy which comes from the electrons that are spread over the molecule.

Second species ˃ First species ˃ Third species

Step-by-step solution

Resonating structures             

Final answer

Second species has greatest delocalization energy it has three resonating structures and none of them has separated charges.

After that first species has two resonating structures and none of them has separated charges.

After that third species has two resonating structures and one of them has separated charges so it has lowest delocalization energy.