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Q.
Order of reactivity towards nucleophilic substitution reaction of the compounds
Haloalkanes and Haloarenes
Solution:
Electron-withdrawing groups increase and electron-donating groups decrease the reactivity towards nucleophilic substitution. Further, more the number of electron-withdrawing groups, higher is the reactivity. Thus, option (c), i.e., iv > iii > ii > i is correct.
