Question

In the given structure of benzene if single bond is represented by $y$ and double bond is represented by $x$ the $C-C$ bond length is:

• A. $X>Y$
• B. $X<Y$
• C. $X=Y$
• D. none of these

Answer 1

Answer: (C)

$X=Y$

The hexagonal ring in benzene with 6 carbon and 6 hydrogen $\left(C_6{H}_6\right)$ is a perfect hexagon with all carbon-carbon bonds with identical length of 1.40 Å. Due to resonance the double bonds being shorter (1.34 Å) than the single bonds (1.54 Å).