In the fluorite structure the coordination number of `Ca^(2+)` ion is

Options

A. `4`
B. `6`
C. `8`
D. `3`

Answer

3

Explanation

In a fluorite structure `(CaF_(2))` every `Ca^(2+)` ion is surrounded by `8` fluoride ion trapped in tetrahedral voids.Thus the `CN` of `Ca^(2+)` ions is eight .