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Chemistry
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
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Q. Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
NEET
NEET 2013
Hydrocarbons
A
$-NO_2$
71%
B
$-C = N$
9%
C
$-SO_3 H$
12%
D
$ -COOH$
8%
Solution:
Deactivating power :
$ - NO_2 > -C \equiv N > - SO_3 H > COOH$