Organic Chemistry Some Basic Principles and Techniques - Result Question 23

####27. The shortest C−C bond distance is found in

[1991]

(a) Diamond

(b) Ethane

(c) Benzene

(d) Acetylene

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Solution:

  1. (d) Shortest C−C distance (1.20\AA) is in acetylene, as acetylene has sp hybridisation.

The bond length increases in the order

C≡Csp(1.20\AA)<Csp2(1.34\AA)=C<Csp(1.54\AA)−C

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