The `Ca^(2+)` and `F^(-)` ions arc located in `CaF_(2)` crystal respectively at face centred cubic lattice points and in

Options

A. tetrahedral voids
B. half of tetrahedral voids
C. octahedral voids
D. half of octahedral voids

Answer

A

Explanation

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