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Question: Answered & Verified by Expert
Increasing order of carbon-carbon bond length for the following is


ChemistryChemical Bonding and Molecular StructureKCETKCET 2011
Options:
  • A $C < B < A < D$
  • B $B < C < A < D$
  • C $D < C < A < B$
  • D $B < A < C < D$
Solution:
1505 Upvotes Verified Answer
The correct answer is: $B < A < C < D$
In $\mathrm{C}_{2} \mathrm{H}_{6}$, carbon-carbon bond is single (1.54 А). In $\mathrm{C}_{6} \mathrm{H}_{6}$, carbon-carbon bond is partially double (1.39 A)
In $\mathrm{C}_{2} \mathrm{H}_{4}$, carbon-carbon bond is double $(1.34 Å)$
In $\mathrm{C}_{2} \mathrm{H}_{2}$, carbon-carbon bond is triple $(1.10 Å)$

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