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BVP Medical BVP Medical Solved Paper-2006

  • question_answer
    The radius of \[N{{a}^{+}}\] is 95 pm and that of \[C{{l}^{-}}\] ion is 181 pm. Predict the co-ordination number of \[N{{a}^{+}}\].   

    A)  8                                            

    B)  6                    

    C)  4                                            

    D)  unpredictable       

    Correct Answer: B

    Solution :

                    Radius ratio \[=\frac{{{r}^{+}}}{{{r}^{-}}}=\frac{95}{181}=0.524\] This radius ratio lies between 0.414 to 0.732. Hence, co-ordination number of \[N{{a}^{+}}\] is 6.


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