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NEET Chemistry The Solid State / ठोस प्रावस्था Question Bank Self Evaluation Test - The Solid State

  • question_answer
    The ionic radii of \[{{X}^{+}}\] and \[{{Y}^{-}}\] ions are 146 and 216 pm respectively. The probable type of structure shown by it is                    

    A) \[CsCl\] type                   

    B) Rock salt type

    C) Zinc blende type

    D) \[Ca{{F}_{2}}\] type

    Correct Answer: B

    Solution :

    [b] The radius ratio \[\frac{{{r}_{+}}}{{{r}_{-}}}=\frac{146}{216}=0.675\] It lies between \[0.414-0.732\]. Hence, it exhibits rock salt type structure.


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