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Which of the following is the correct order of C-C bond length?

$\begin{array}{1 1}(a)\;sp^3 - sp^3 < sp^3 - sp^2 < sp^3 - sp < sp^2 - sp^2\\(b)\;sp^2 - sp^2 < sp^3 - sp < sp^3 - sp^2 < sp^3 - sp^3\\(c)\; sp^3 - sp < sp^2 - sp^2 < sp^3 - sp^2 < sp^3 - sp^3\\(d)\; sp^2 - sp^2 < sp^3 - sp^3 < sp^3 - sp^2 < sp^3 - sp\end{array}$

1 Answer

$ sp^3 - sp < sp^2 - sp^2 < sp^3 - sp^2 < sp^3 - sp^3$
-C-C(triplebond) < -C=C- < -C-C= < -C-C-
Less than the ($1.2\overset{\circ}{A}$) < double bond ($1.2\overset{\circ}{A}$) < in between ($1.2-1.54 \overset{\circ}{A}$) < single bond (1$.54\overset{\circ}{A}$)
Hence (c) is the correct answer.
answered Dec 9, 2013 by sreemathi.v
edited Apr 16 by sharmaaparna1
 

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