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40.Which one of the following statements is incorrect about rock salt type ?(A)It has fcc arrangement of Na+. (B)Na+ and CL- ions have a co-ordination number of 6:6 .(C) A unit cell of NaCl consists of four NaCl units. (D) All halides of alkali metals have rock salt type structure.

Answer» 40.Which one of the following statements is incorrect about rock salt type ?(A)It has fcc arrangement of Na+. (B)Na+ and CL- ions have a co-ordination number of 6:6 .(C) A unit cell of NaCl consists of four NaCl units. (D) All halides of alkali metals have rock salt type structure.


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