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Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2006

  • question_answer
    First ionization potential is highest for

    A)  \[Na\]              

    B)  \[Mg\]

    C)  \[Al\]                

    D)  None of these

    Correct Answer: B

    Solution :

    Ionization potential increases from left to right in period. Exception-1st ionization potential of group IIA elements is higher than 1st ionization potential of group III A elements.
    Elements      \[Na\]      \[Mg\] \[Al\]
    Group          \[IA\]    \[IIA\]  \[IIIA\]
    So, \[Mg\] has highest 1st ionization potential.


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