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In the fluorite structure if the radius ...

In the fluorite structure if the radius ratio is `(sqrt(3)/(2)-1)` how many ions does each cation touch?

A

4 anions

B

12 cations

C

8 anions

D

No cations

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The correct Answer is:
B,C
In flourite structure, cations form the lattice & anions occupy each of tetrahedral voids.
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