Question

Select the true statement about benzene amongst the following.

• A. Because of unsaturation benzene easily undergoes addition
• B. There are two types of $C-C$ bonds in benzene molecule
• C. There is cyclic delocalisation of pi-bonds in benzene
• D. Monosubstitution of benzene gives three isomeric products

Answer 1

Answer: (C)

According to the orbital concept, each carbon atom in benzene is $sp^2$ -hybridised and one p-orbital of each carbon remains unhybridised. The $\pi$-electron charge in benzene is not confined to space between two carbon atoms as in ethylene, but is spread over a greater area. This is known as the delocalisation of the electron charge.