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J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    The number of beta particles emitted in the radioactive decay series from\[^{238}{{U}_{92}}\]to\[^{206}P{{b}_{82}}\]is

    A)  10                                         

    B)  8

    C)  6                                            

    D)  2

    Correct Answer: C

    Solution :

                    Number of p-particles\[=2\times \] no. of a particles \[-\] change in atomic number Number of\[\alpha -\]particles\[=\frac{238-206}{4}\] \[=8\] \[\therefore \]No. of\[\beta -\]particles\[=2\times 8-(92-82)\]          \[=16-10\]           \[=6\]


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