The Carbon Carbon bond length is maximum in -

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HPSC Assistant Professor 2018 Chemistry (Official Paper)

Answer 1

Hybridization and Bond Length: The type of hybridization affects bond length. The order of bond length from longest to shortest generally follows: sp³ (single bond) > sp² (double bond) > sp (triple bond).
Bond Length Hierarchy:
- Single bonds (σ bonds) have the longest bond length.
- Double bonds (σ and π bonds) have shorter bond lengths than single bonds.
- Triple bonds (σ and two π bonds) have the shortest bond lengths.

CH₂=CH₂ (Ethene): Contains a double bond between the carbon atoms, indicating sp² hybridization for each carbon.
HC≡CH (Ethyne): Contains a triple bond between the carbon atoms, indicating sp hybridization for each carbon.
Benzene: Contains alternating single and double bonds, often described as having a bond length between a single and double bond due to resonance, indicating sp² hybridization.
CH₃CH₃ (Ethane): Contains a single bond between the carbon atoms, indicating sp³ hybridization for each carbon.

Considering the hybridization and the bond length hierarchy, the maximum carbon-carbon bond length is found in: CH₃CH₃