WB JEE Medical WB JEE Medical Solved Paper-2012

  • question_answer
    \[{{\,}_{11}}N{{a}^{24}}\]is radioactive and it decays to

    A)  \[{{\,}_{8}}{{F}^{20}}\]and a-particles

    B)  \[{{\,}_{13}}A{{l}^{24}}\]and positron

    C)  \[{{\,}_{11}}N{{a}^{23}}\]and neutron

    D)  \[{{\,}_{12}}M{{g}^{24}}\]and \[\beta -\]particles

    Correct Answer: D

    Solution :

     \[{{\,}_{11}}N{{a}^{24}}\xrightarrow{{}}\,\underset{(stable)}{\mathop{_{12}M{{g}^{24}}}}\,+{{\,}_{-1}}{{\beta }^{0}}\]


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