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JEE Main & Advanced Physics Nuclear Physics And Radioactivity Question Bank Radioactivity

  • question_answer
    A nucleus decays by \[{{\beta }^{+}}\] emission followed by a gamma emission. If the atomic and mass numbers of the parent nucleus are Z and A respectively, the corresponding numbers for the daughter nucleus are respectively.  [UPSEAT 2005]

    A)            \[Z-1\] and \[A-1\]            

    B)            \[Z+1\] and \[A\]                       

    C)            \[Z-1\] and \[A\]                

    D)            \[Z+1\] and \[A-1\]                   

    Correct Answer: C

    Solution :

               After \[{{\beta }^{+}}{{(}_{+1}}{{e}^{0}})\] emission atomic number decreases by one and mass number remain unchanged. g-emission, there will be no change on mass number and atomic number.


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