The number of molecules in a unit cell of fluorite is_____.
The number of molecules in a unit cell of fluorite is 4. Examples include CaF2,BaCl2,BaF2,SrF2.
In CaF2 unit cell, Ca2+ ion occupy ccp and F− ions occupy all the tetrahedral voids.
The coordination number of Ca2+ is 8 and the coordination number of F− ions is 4.