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NEET Chemistry NEET PYQ-The Solid State

  • question_answer
    A solid compound XY has \[NaCl\] structure. If the radius of the cation is 100 pm, the radius of the anion \[({{Y}^{-}})\] will be             [AIPMT (M) 2011]

    A) 275.1pm

    B) 322.5 pm

    C) 241.5 pm

    D) 165.7 pm

    Correct Answer: C

    Solution :

    [c] Radius ratio of NaCI like crystal\[=\frac{{{r}^{+}}}{{{r}^{-}}}=0.414\]
    or\[{{r}^{-}}=\frac{100}{0.414}=241.5\,pm\]


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