JIPMER Jipmer Medical Solved Paper-2002

  • question_answer
    The most stable carbonium ion among these is:

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

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

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

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

    Correct Answer: A

    Solution :

    Diphenyl methyl carbonium ion\[\overset{+}{\mathop{({{C}_{6}}{{H}_{5}}CH{{C}_{6}}{{H}_{5}})}}\,\] is the most stable due to maximum resonance, possible in it.


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