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JEE Main & Advanced Chemistry Surface & Nuclear Chemistry / भूतल और नाभिकीय रसायन Question Bank Causes of radioactivity and Group displacement law

  • question_answer
    When radium atom which is placed in II group, loses an \[\alpha \]- particle, a new element is formed which should be placed in group [CPMT 1979, 80, 94; NCERT 1979, 82]

    A)                 Second

    B)                 First

    C)                 Fourth 

    D)                 Zero

    Correct Answer: D

    Solution :

              Going two positions back from 2nd group gives zero group.


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