X-ray diffraction studies of benzene reveal that all carbon-carbon bond lengths are identical. What — Hydrocarbons Chemistry Question

💡 Solution & Explanation

In benzene, due to complete delocalization of $\pi$ electrons (resonance), all carbon-carbon bonds are equivalent. Their length is $1.39 \text{ \AA}$, which is intermediate between a standard $C-C$ single bond ($1.54 \text{ \AA}$) and a $C=C$ double bond ($1.34 \text{ \AA}$).