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Two ions A^(o+) and B^(Θ) have radii 88 ...

Two ions `A^(o+)` and `B^(Θ)` have radii `88` and `200` pm, respectively. In the close-packed crystal of compound `AB`, predict coodination number of `A^(o+)`.

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The correct Answer is:
6
`(r^(+))/(r^(-))=(88)/(200)=0.44`
It lies in the range of `0.414-0.732`
Hence the coordination number of `A^(+)=6`
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