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BHU PMT BHU PMT (Screening) Solved Paper-2011

  • question_answer
    \[_{13}A{{l}^{27}}\]is a stable isotope,\[_{13}A{{l}^{29}}\]is expected to disintegrate by

    A)  \[\alpha -\]emission                     

    B)  \[\beta -\]emission

    C)  positron emission          

    D)  proton emission

    Correct Answer: B

    Solution :

                     The\[\frac{n}{p}\]ratio of\[_{13}A{{l}^{29}}\]place it above the belt of stability and thus it emits\[\beta -\]particles.


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