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J & K CET Medical J & K - CET Medical Solved Paper-2006

  • question_answer
    The radius ratio\[\left( \frac{{{r}^{+}}}{{{r}^{-}}} \right)\]of an ionic solid\[({{A}^{+}}{{B}^{-}})\]is 0.69. What is the coordination number of\[{{B}^{-}}\]?

    A)  6                                            

    B)  8

    C)  2                                            

    D)  10

    Correct Answer: A

    Solution :

                    \[\frac{{{r}_{c}}}{{{r}_{a}}}\]                       Co-ordination number 0.155-0.225                         3 0.225 - 0.414                       4 0.414-0.732                         6 0.732-1                                 8


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