Manipal Engineering Manipal Engineering Solved Paper-2013

  • question_answer
    Determine the relative size of\[Cs\]atom compared to a\[Li\]atom, if their densities are \[1.87g/cc\] and\[0.53g/cc\] respectively

    A) \[r(Cs)=1.753r(Li)\]

    B) \[r(Cs)=1.936r(Li)\]

    C) \[r(Cs)=2.753r(Li)\]

    D) \[r(Cs)=2.936r(Li)\]

    Correct Answer: C

    Solution :

    \[\frac{d(Cs)}{d(Li)}=\frac{1.87}{0.53}=\frac{133}{7}{{\left( \frac{r(Li)}{r(Cs)} \right)}^{3}}\] \[\frac{r(Cs)}{r(Li)}=1.753\] or            \[{{r}_{Cs}}=1.753r(Li)\]


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