Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2010

  • question_answer
    The ratio of the radii of the nucleic He and } H is

    A)  \[4\]                                                    

    B) \[2\]

    C)  \[3\]                                                    

    D) \[1.6\]

    Correct Answer: D

    Solution :

    Radii of nucleus, \[r=R{{(A)}^{1/3}}\] \[\Rightarrow \]               \[\frac{{{r}_{He}}}{{{r}_{H}}}={{\left( \frac{{{A}_{He}}}{{{A}_{H}}} \right)}^{1/3}}\] where, A = atomic mass                 \[\frac{{{r}_{He}}}{{{r}_{H}}}={{\left( \frac{4}{1} \right)}^{1/3}}={{(4)}^{1/3}}=1.6\]


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