Question:
The carbon-carbon bond length in benzene is
The carbon-carbon bond length in benzene is
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Benzene C-C bond (1.39 Å) is shorter than single (1.54 Å) but longer than double (1.34 Å).
Updated On: Apr 10, 2026
- in between $C_{2}H_{6}$ and $C_{2}H_{4}$
- same as in $C_{2}H_{4}$
- in between $C_{2}H_{6}$ and $C_{2}H_{2}$
- in between $C_{2}H_{4}$ and $C_{2}H_{2}$
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The Correct Option is A
Solution and Explanation
Step 1: Comparison Values
The bond length of C-C in $C_{2}H_{6}$ (ethane) is 1.54 Å and $C=C$ in $C_{2}H_{4}$ (ethene) is 1.34 Å.
Step 2: Resonance Effect
In benzene, the electrons are delocalized, making all C-C bonds equivalent.
Step 3: Result
The actual carbon-carbon bond length in benzene is 1.39 Å, which lies between the single and double bond lengths.
Final Answer: (a)
The bond length of C-C in $C_{2}H_{6}$ (ethane) is 1.54 Å and $C=C$ in $C_{2}H_{4}$ (ethene) is 1.34 Å.
Step 2: Resonance Effect
In benzene, the electrons are delocalized, making all C-C bonds equivalent.
Step 3: Result
The actual carbon-carbon bond length in benzene is 1.39 Å, which lies between the single and double bond lengths.
Final Answer: (a)
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