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JIPMER Jipmer Medical Solved Paper-2001

  • question_answer
    Radioactivity of neptunium \[({}_{93}N{{p}^{237}})\]stops when it is converted into:

    A)  Bi-209    

    B)                         Rn-222

    C)         Th-230                

    D)         Pb-207

    Correct Answer: A

    Solution :

    Neptunium \[({}_{93}N{{p}^{237}})\] is a member of (n+1) series, hence, its end product will be Bi-209 \[(209=4\times 52+1)\].


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