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J & K CET Engineering J and K - CET Engineering Solved Paper-2005

  • question_answer
    An aromatic compound among other things should have a\[\pi -\]electron cloud containing  \[(4n+2)\,\pi \]electrons where \[n\]can't be

    A)  1/2        

    B)  3

    C)  2             

    D)  1

    Correct Answer: A

    Solution :

     According to Huckel?s rule, an aromatic compound should have (4n + 2) n electrons. where,\[n\]is an integer, \[ie,\]\[0,1,2,3,4...\]and possesses unusual stability due to the delocalization of \[\pi -\]electrons.


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