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

  • question_answer
    The \[{{r}_{+}}/{{r}_{-}}\] ratio of \[ZnS\] is 0.402. Pick out the incorrect statements from the following?

    A) \[ZnS\] is 4:4 coordination compound.

    B) \[ZnS\] does not crystallize in rock salt type lattice because \[{{r}_{+}}/{{r}_{-}}\] is too small to avoid overlapping of \[{{S}^{2-}}\] ions.

    C) \[Z{{n}^{2+}}\] ion is too small to fit precisely into the octahedral voids of \[{{S}^{2-}}\] ions.

    D) \[Z{{n}^{2+}}\] ion is too large to fit into the octahedral voids of \[{{S}^{2-}}\] ions.

    Correct Answer: D

    Solution :

    [d] \[Z{{n}^{2+}}\] ion is too small to fit into the octahedral voids of \[{{S}^{2-}}\] ions.


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