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VMMC VMMC Medical Solved Paper-2008

  • question_answer
    The number of \[\alpha -\] and \[\beta -\] particles emitted in nuclear reaction \[_{90}T{{h}^{228}}\xrightarrow{{}}{{\,}_{83}}B{{i}^{212}}\] are respectively

    A) 4, 1                        

    B)        3, 7                        

    C) 8, 1                        

    D)        4, 7

    Correct Answer: A

    Solution :

    \[{{\,}_{90}}T{{h}^{228}}\xrightarrow{{}}{{\,}_{83}}B{{i}^{212}}+x_{2}^{4}\alpha +y_{-1}^{0}\beta \] \[228=212+4x\]or \[4x=16\]or \[x=4\] \[90=83+2x-y=83+8-y\]or \[y=1.\]


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