Compound `X_(2)Y` have antiflurate structure . What is /are correct statement ?

Options

A. The miimum distance between `X^(+)` is `(a)/(2)` , where 'a' =edge length of unit cell
B. The co-ordination number ratio of x and y 8:4
C. If `X^(+)` removed from alternate tetrahedral void then CN is 4 : 4
D. If `X^(+)` removed from alternate tetrahedral void then CN is 4 : 8

Answer

A, C