Question

Question #6befa

Answer 1

Got an organic text.....?

Explanation:

Halogen substitution on an aryl ring DENUDES the entire ring of electron density because the halogen is more electronegative than carbon, and electron density is shunted towards the halogen. However, when `C_6H_5X` undergoes aromatic substitution the lone pairs on the halogen is believed to stabilize the intermediate that results from ortho or para substitution, and thus substitution of halo-arenes tends to give this outcome.

None of this is any substitute for reading the chapter on electrophilic aromatic substitution in your organic text.