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EAMCET Medical EAMCET Medical Solved Paper-2008

  • question_answer
    AB is an ionic solid. If the ratio of ionic radii of \[{{\text{A}}^{\text{+}}}\] and \[{{\text{B}}^{-}}\] is 0.52, what is the coordination number of \[{{\text{B}}^{-}}\]?

    A)  2                                            

    B)  3

    C)  6                                            

    D)  8

    Correct Answer: C

    Solution :

                     
    Radius ratio\[{{r}^{+}}/{{r}^{-}}\] Coordination number
    0.155-0.225 3
    0.225-0.414 4
    0.414-0.732 6
    0.732-1.00 8
    Hence, if the ratio of ionic radii is 0.52, then the coordination number of \[{{B}^{-}}\]is 6.


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