1.

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

Answer»

4 and 2
6 and 6
8 and 4
4 and 9

Solution :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


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