Question

Benzene ring has alternate (C–C) single and double bonds, yet all C–C bonds are of equal length. Why?

Answer 1

all of the carbon-carbon bonds in the benzene molecule are of the same length, and it is known that a single bond is longer than a double bond. In addition, the bond length (the distance between the two bonded atoms) in benzene is greater than a double bond, but shorter than a single bond

Answer 2

The chemical formula of Benzene is ${ C }_{ 6 }{ H }_{ 6 }$ and it is in ring shape with one hydrogen atom attached to each carbon atom. It generally contains alternate double and single c-c bonds whereas the bond lengths are equal. This is mainly due to resonance and delocalization of pi-electrons which leads to its stability. The six pi-electrons gets delocalized between six carbon atoms in the ring provides stability to the benzene ring.