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What types of reagents cause characteris...

What types of reagents cause characteristic benzene substitution?
(i) Nucleophiles
(ii). Elecrophiles
(iii). Lewis acids
(iv). Lewis Bases

A

(i),(iii)

B

(ii),(iv)

C

(ii),(iii)

D

(i),(ii)

Text Solution

Verified by Experts

The correct Answer is:
3
In characteristic benzene substitution, called electrophilic aromatic substitution, and H is replaced by an electrophilic group (or lewis acid) E preserving the aromatic system In `S_(N)l` and `S_(N)2` reactions, the attacking group is a nucleophile or a Lewis base and the group replaced is a weaker base while in free-radical substitution the attacking species `(X^(*))` removes an `H^(*)` and leaves another radical `R^(*)` which enters a chain reaction.
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