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Which of the following statements is cor...

Which of the following statements is correct in the rock-salt structure of ionic compounds?

A

Co-ordination number of cation is four whereas that of anion is six

B

Co-ordinatioin number of cation is six whereas that of anion is four

C

Co-ordination number of each cation and anion is four

D

Co-ordination number of each cation and anion is six

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