Chemical Bonding and Molecular Structure - Result Question 76

####78. The distance between the two adjacent carbon atoms is largest in

[1994]

(a) benzene

(b) ethene

(c) butane

(d) ethyne

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Solution:

  1. (c) The CC bond distance decreases as the multiplicity of the bond increases. Thus, bond distance decreases in the order: butane (1.54\AA) > benzene (1.39\AA) > ethene (1.34) \AA> ethyne (1.20\AA). Thus in butane, CC bond distance is the largest.


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