Where the `TVs` and `OV s` are located in a closet packed structure?

In a closed packed structure

How many TVs and OV s occur per unit cell and per atom in a closest packed structure?

How many TVs and OV s occur per unit cell and per atom in a closest packed structure?

If the radius of the octahedral void is r and radius of the atom in closet packed structure is R then

If the radius of the octahedral void is r and radius of the atom in closet packed structure is R then

Position of TVs in closest packed structure is//are

Position of TVs in closest packed structure is//are

Position of TVs in closest packed structure is//are

The distance between any two TV_(s) formed one any body diagonal of a closest packed structure is = x xx a , where a is the edge length of closest packed structure. the value of x = ……… .