A) Ill > I > II > IV
B) IV > I > II > III
C) I > II > III > IV
D) II > I > III > IV
Correct Answer: A
Solution :
[a] III > I > II> IV Reactivity towards electrophilic substitution decreases as the electron density in the benzene ring decreases. Electron donating ability follows order: \[-{{O}^{-}}~>-N{{H}_{2}}-N{{R}_{2}}>-\,O\,C{{H}_{3}}>\] \[-\,NHCOC{{H}_{3}}>-\,C{{H}_{3}}>-X(-F>-CI-Br>I)\] For o, p-directing groups.You need to login to perform this action.
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