Organic Chemistry Some Basic Principles and Techniques - Result Question 51
####57. The correct order of increasing bond length of $C-H, C-O, C-C$ and $C=C$ is :
[2011]
(a) $C-H<C=C<C-O<C-C$
(b) $C-C<C=C<C-O<C-H$
(c) $C-O<C-H<C-C<C=C$
(d) $C-H<C-O<C-C<C=C$
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Solution:
- (a) Bond length order is
$ \begin{aligned} & C-H<\underset{1.34 A^{\circ}}{C}<\underset{1.40 A^{\circ}}{C}<\underset{1.54 A^{\circ}}{C}-O-C \\ & 1.10 A^{\circ} \end{aligned} $
