CET Karnataka Medical CET - Karnataka Medical Solved Paper-2009

  • question_answer
    The carbon-carbon bond length in benzene is

    A)  In between                                                                                                \[{{C}_{2}}{{H}_{6}}\]  and                                                                                                \[{{C}_{2}}{{H}_{4}}\]

    B)  Same as in                                                                                                \[{{C}_{2}}{{H}_{4}}\]

    C)  In between C^H^ and                                                                                                \[{{C}_{2}}{{H}_{4}}\]

    D)  In between                                                                                                \[{{C}_{2}}{{H}_{4}}\]  and C

    Correct Answer: A

    Solution :

    The carbon-carbon bond length in benzene                                                                   \[(1.39\overset{\text{o}}{\mathop{\text{A}}}\,)\] is between that of                                                               \[C-C(1.54\overset{\text{o}}{\mathop{\text{A}}}\,)\]  and                                                               \[C=C(1.34\overset{\text{o}}{\mathop{\text{A}}}\,)\]  ie, in between that of                                                                                                \[{{C}_{2}}{{H}_{6}}\]  and                                                                                                \[{{C}_{2}}{{H}_{4}}\] .


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