Question

In the reaction of benzene with an electrophile $E^{+}$, the structure of the intermediate $\sigma$-complex can be represented as

• A.
• B.
• C.
• D.

Answer 1

Answer: (B)

In the reaction of benzene with an electrophile $E^{+}$, the structure of the intermediate $\sigma$ - complex can be represented as

The arenium ion is resonance stabilised, which can shown as

Option (d) would be correct only , if there would be a positive change.