BCECE Engineering BCECE Engineering Solved Paper-2005

  • question_answer
    Which of the following have delocalized electron?         

    A) Benzene       

    B)        Cyclohexane

    C) \[C{{H}_{4}}\]                   

    D)        \[{{C}_{2}}{{H}_{6}}\]

    Correct Answer: A

    Solution :

    Key Idea: Aromatic compounds have delocalized \[\pi \]electrons. Out of given choices cyclohexane,\[C{{H}_{4}},{{C}_{2}}{{H}_{6}}\] and benzene, only benzene is aromatic compound. Benzene has 6 delocalized \[\pi \] electrons.


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