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CMC Medical CMC-Medical Ludhiana Solved Paper-2010

  • question_answer
    In the. reaction, \[Po\xrightarrow{-\alpha }Pb\xrightarrow{-\beta }Bi,\] if \[Bi\] belongs to group 15, to which Po belongs?

    A)  13                                         

    B)  14

    C)  15                                         

    D)  16

    Correct Answer: D

    Solution :

                    \[\underset{16\,group}{\mathop{_{84}P{{o}^{209}}}}\,\xrightarrow{-\alpha }\,\underset{14\,group}{\mathop{_{82}P{{b}^{207}}}}\,\xrightarrow{-\beta }\,\underset{15\,group}{\mathop{_{83}B{{i}^{207}}}}\,\] (According to group displacement law) Po belongs to 16 group.


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