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Question

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

A
Coordination number of cation is four whereas that of anion is six
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B
Coordination number of cation is six whereas that of anion is four
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C
Coordination number of each cation and anion is four
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D
Coordination number of each cation and anion is six
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Solution

The correct option is D Coordination number of each cation and anion is six
In the figure, one can see each anion is surrounded by 6 cations and each cation is surrounded by 6 anions.
448348_130024_ans_186557b742bb48e79de677d77eb359c8.png

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