In calcium fluoride, having the flurite structure the coordination number of `Ca^(2+)` ion and `F^(-)` Ion are ……………. .

Options

A. 4 and 2
B. 6 and 6
C. 8 and 4
D. 4 and 9

Answer

C

Explanation

Hint : `CaF_(2)` has cubical close packed arrangement
`Ca^(2+)` ions are in face centered cubic arrangement, each `Ca^(2+)` ions. Therefore coordination number of `Ca^(2+)` is 8 and of `F^(-)` is 4