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In LiI Crystal, $I^–$ ions form a cubical closest packed arrangement and $Li^+$ ions occupy octahedral holes. What is the relationship between the edge-length of the unit cells and the radii of the $I^–$ ions? Calculate the limiting ionic radii of $Li^+$ and $I^{–-}$ if a= 600pm.

1 Answer

Hence (B) is the correct answer.
answered Jun 4, 2014 by sreemathi.v