Question

Electrophile $N{O}_2^{+}$ attacks on the following molecules.

In which cases will $N{O}_2^{+}$ be at meta-position?

• A. II and IV
• B. I, II and III
• C. II and III
• D. I only

Answer 1

The correct option is B I, II and III

$-R$ groups direct the incoming electrophile to meta position in electrophilic aromatic substitution.

$-CC{l}_3,-N{O}_2$ and $-N{H}_3^{+}$ are $-R$ groups and hence they direct the incoming electrophile to meta position.
$-O^{-}$ is $+R$ group and it directs the incoming electrophile towards ortho and para position in electrophilic aromatic substitution.