English delocalized valence electrons delocalization delocalized electrons delocalized delocalized delocalize delocalization delocalize Delocalized valence electrons Delocalized electrons localized http://en.wikipedia.org/wiki/Delocalized_electron delocalization delocalized delocalized electrons localized delokaliseres π-cloud delocalization delocalized electrons English π-cloud delocalized Wikipedia en:Delocalized electron http://en.wikipedia.org/wiki/Delocalized_electron