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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2010

  • question_answer
    generally, the first ionization energy increases along a period. But there are some exceptions. One which is not an exceptfon is

    A)  \[N\] and \[0\]       

    B)  \[Na\] and \[Mg\]

    C)  \[Mg\] and \[Al\]     

    D)  \[Be\] and \[B\]

    Correct Answer: B

    Solution :

    Na belongs to IA group and Mg belongs to IIA group. On moving form left to right in a period, first ionization energy increases, thus, IE of \[Mg\] is greater than the IE of Na. IE order \[Mg>Na\]


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