BaO has a rock-salt type structure. When subjected to high pressure, the ratio of the coordination number of Ba^(+2) ion to O^(-2) changes to

BaO has a rock-salt type structure. When subjected to high pressure, t

1.	BaO has a rock-salt type structure. When subjected to high pressure, the ratio of the coordination number of Ba^(+2) ion to O^(-2) changes to
Answer» `4 : 8` `8 : 4` `8 : 8` `4 : 4` ANSWER :C