Delocalisation :
Delocalisation means that pairs of bonding electrons extend over three or more atoms and belong to the whole molecule. Delocalisation $\pi$ orbital are much larger than the localised $\pi$ orbital and are therefore more stable.
Delocalisation :
Delocalisation means that pairs of bonding electrons extend over three or more atoms and belong to the whole molecule. Delocalisation $\pi$ orbital are much larger than the localised $\pi$ orbital and are therefore more stable.