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With the help of given values of ionic r...

With the help of given values of ionic radii answer the following questions :

(a)What would be coordination number of Mg in MgO ?
(b)What type of unit cell is given by CsBr ?
(c )Can we substitute `Cl^-` from Nacl by `Br^-` and `I^-` ions without changing the coordination system ?
(d)What type of voids are present in `Na_2S` ?
(e)What would be the maximum radii of that ion which can fit into site occupied by `F^-` in KF ?

Text Solution

Verified by Experts

(a) `6:6`, (b)BCC , (c ) Yes , (d)Both tetrahedral and octahedral , (e)321 pm
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