Manipal Medical Manipal Medical Solved Paper-2010

  • question_answer
    The most stable carbonium ion among the following is

    A)  \[{{C}_{6}}{{H}_{5}}\overset{+}{\mathop{C}}\,H{{C}_{6}}{{H}_{5}}\]

    B)  \[{{C}_{6}}{{H}_{5}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

    C)  \[C{{H}_{3}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]       

    D)  \[{{C}_{6}}{{H}_{5}}C{{H}_{2}}\overset{+}{\mathop{C}}\,{{H}_{2}}\]

    Correct Answer: A

    Solution :

     \[{{C}_{6}}{{H}_{5}}\overset{+}{\mathop{C}}\,H{{C}_{6}}{{H}_{5}}\]is most stable since the positive charge can be delocalised over both the phenyl rings.


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