1.

The `Ca^(2+)` and `F^(-)` ions located in `CaF_(2)` crystal respectively at `f.c.c.` lattice points and in`:`A. octahedral voidsB. tetrahedral voidsC. half of octahedral voidsD. half of tetrahedral voids

Answer» Correct Answer - 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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