In the fluorite structure,the coordination number of $Ca^{2+}$ ion is

The number of carbon atoms per unit cell of diamond unit cell is

The compound $AB$ crystallizes in a cubic lattice in which both $A$ and $B$ atoms have coordination numbers of $8$. To what crystal class does the unit cell belong?

If the edge length of a cubic unit cell is $a$,then the octahedral void is located at a distance of ....... from the corner of the cube.

The unit cell of diamond is composed of:

What is the coordination number of a cation in an ionic compound if the type of hole occupied by the cation is octahedral?