Question

Assertion (A) In the electrophilic substitution of aryl halides, the incoming electrophile gets attached to the meta position
Reason (R) Aryl halides are moderately deactivating.

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $R$ is correct; $A$ is incorrect.

Answer 1

Answer: (D)

In the electrophilic substitution of aryl halides, the incoming electrophile gets attached to the ortho and/or para position. This is because, even though aryl halides have strong $-I$-effect, the electron density on ortho and para positions is greater than that at meta position due to resonance.
Hence, the incoming electrophile is directed at the ortho and/or para position.
Thus, $R$ is correct but $A$ is incorrect.