An `AB_(2)` type structure is found in

Options

A. `NaCl `
B. `CaF_(2)`
C. `Al_(2)O_(3) `
D. `N_(2)O`

Answer

B

Explanation

For an `AB_(2)` type structure , the equivalent equation at equilibrium is
`AB_(2) iff A^(2+)+2B^(-)` .
For `CaF_(2)`, the equivalent equation at equilibrium is
` CaF_(2) iff Ca^(2+) +2F^(-)` .
Therefore ` CaF_(2)` has an `AB_(2)` type structure .