Charge delocalization is a stabilizing force because it spreads energy over a larger area rather than keeping it confined to a small area. Since electrons are charges, the presence of delocalized electrons brings extra stability to a system compared to a similar system where electrons are localized.

Why does resonance increase stability?

Because resonance allows for delocalization, in which the overall energy of a molecule is lowered since its electrons occupy a greater volume, molecules that experience resonance are more stable than those that do not. These molecules are termed resonance stabilized.

How delocalization affect the stability of a compound?

Having delocalized electrons causes a compound to be more stable than if all its electrons were localized. ... If the two double bonds are separated by more than one single bond, the reactions of compounds with two double bonds are exactly the same as the reactions of compounds with one double bond.