What is the correct order of carbon-carbon bo | vedclass

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(A) The bond length depends on the hybridization of the carbon atoms involved in the bond.$1$. $C_2H_6$ (Ethane): $sp^3-sp^3$ hybridization, bond leng

Vedclass · Accepted Answer

$C_2H_6 > C_6H_6 > C_2H_4 > C_2H_2$

Vedclass · Answer

(A) The bond length depends on the hybridization of the carbon atoms involved in the bond.$1$. $C_2H_6$ (Ethane): $sp^3-sp^3$ hybridization, bond length $\approx 154 \ pm$.$2$. $C_6H_6$ (Benzene): $sp^2-sp^2$ hybridization with resonance, bond length $\approx 139 \ pm$.$3$. $C_2H_4$ (Ethene): $sp^2-sp^2$ hybridization, bond length $\approx 134 \ pm$.$4$. $C_2H_2$ (Ethyne): $sp-sp$ hybridization, bond length $\approx 120 \ pm$.As the $s$-character increases, the bond length decreases.Therefore, the order of bond length is $C_2H_6 (154 \ pm) > C_6H_6 (139 \ pm) > C_2H_4 (134 \ pm) > C_2H_2 (120 \ pm)$.

What is the correct order of carbon-carbon bond length in the following molecules?

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