If the ratio of coordination no. of \( A \) to that of \( B \) is \( x: y \), then the ratio of ...

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If the ratio of coordination no. of \( A \) to that of \( B \) is \( x: y \), then the ratio of no. of atoms of \( A \) to that no. of atoms of \( B \) in unit cell is:
(a) \( x: y \)
(b) \( y: x \)
(c) \( x^{2}: y \)
(d) \( y: x^{2} \)
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