Question

The coordination number of cation and anion in fluorite CaF₂ and antifluorite Na₂O are respectively:
OPTIONS:
8:4 AND 6:3
6:3 AND 4:4
8:4 AND 4:8
4:8 AND 8:4
8:8 AND 6:6

Answer 1

answer is 8:4and4:8.
and both have CCP structure.