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The Ca^(2+) and F^(-) ions located in Ca...

The `Ca^(2+)` and `F^(-)` ions located in `CaF_(2)` crystal respectively at `f.c.c.` lattice points and in`:`

A

octahedral voids

B

tetrahedral voids

C

half of octahedral voids

D

half of tetrahedral voids

Text Solution

Verified by Experts

The correct Answer is:
b
In `CaF_(2)`, the `Ca^(2+)` ions are present at all the corners and the centre of each face of the cube. The `F^(-)` ions occupy the tetrahedral sites.
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