Aromaticity | Electromeric Effect

Electromeric effect is

Aromaticity and mersomeric effect

Aromaticity and mersomeric effect

Introduction To Organic Chemistry - Electromeric Effect

|| Aromaticity ||

The electromeric effect is

Assertion : Electromeric effect is brought into play only at the requirement of the reagent. Reason : It is a temporary effect in which bond pair is shifted to one of the constituent atoms.

Which of the following does not exhibit electromeric effect?