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JCECE Medical JCECE Medical Solved Paper-2009

  • question_answer
    The number of \[\alpha -\]particles emitted by \[{{\,}_{84}}R{{a}^{218}}\xrightarrow{{}}{{\,}_{82}}P{{b}^{206}}\]is

    A)  3                  

    B)  4

    C)  6                  

    D)  2

    Correct Answer: A

    Solution :

     Number of \[\alpha -\]particles \[=\frac{\text{change}\,\text{in}\,\text{atomic}\,\text{mass}}{\text{4}}\] \[=\frac{218-206}{4}=\frac{12}{4}=3\]


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