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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2008

  • question_answer
    An ionic compound is expected to have  tetrahedral structure if \[{{r}_{+}}/{{r}_{-}}\] lies in the range of

    A)  0.414 to 0.732  

    B)  0.225 to 0.414

    C)  0.155 to 0.225  

    D)  0.732 to 1

    Correct Answer: B

    Solution :

    Radius ratio \[({{r}_{+}}/{{r}_{-}})\] Structure
    \[<0.155\] linear
    0.155 - 0.225 planar triangular
    0.225 - 0414 tetrahedral
    0.414 - 0.732 octahedral
    0.732 - 1 bcc


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