Chemistry - Aromatic Hydrocarbon Question with Solution | TestHub

Rate of${\mathrm{E}}^{+}$substitution reaction$\propto -\mathrm{v}\mathrm{e}$charge density on benzene ring
Electron releasing group; increasing the rate of$\mathrm{E}\mathrm{S}\mathrm{R}$; halogen has$-\mathrm{I}>+\mathrm{M}$so deactivating group & but show$+\mathrm{M}$butshow$-\mathrm{M}>-\mathrm{I}$so less deactivating group only

Reactivity order is: