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JEE Main & Advanced JEE Main Paper (Held on 09-4-2019 Morning)

  • question_answer
    The element having greatest difference between its first and second ionization energies, is : [JEE Main 9-4-2019 Morning]

    A) Ca                              

    B) K

    C) Ba                               

    D) Sc

    Correct Answer: B

    Solution :

    K = 2, 8, 8 ,1 After removal of one electron, second electron we have to remove from another shell, hence there is large difference between first and second ionization energies.


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