Question

The correct order of reactivity towards the electrophilic substitution of the compounds aniline (I), benzene (II) and nitrobenzene (III) is

(a) III > II > I

(b) II > III > I

(c) I < II > III

(d) I > II > III

Answer 1

The correct option is: (d) I > II > III

Explanation:

-NH₂ group is electron donating hence increases electron density on ring. Benzene is also electron rich due to delocalisation of electrons. -NO₂ group is electron withdrawing hence, decreases electron density on ring. Thus, correct order for electrophilic substitution is I > II > III.