1.

How is radius ratio is useful in determination of structure of an lonic compound ?

Answer»

Solution :(i) The structure of an ionic compound depends upon the stoichiometry and the size of the ions.
(ii) Generally in ionic crystals, the bigger anions are present in the CLOSE packed arrangements the cations occupy the voids.
(iii) The ratio of radius of CATION and anion `(r_(c^(+)))/(r_(A^(-)))` PLAYS an important ROLE in determining the structure.
(iv) For EG,


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