In sodium chloride,$Cl^-$ ions form a $ccp$ arrangement. In this structure,where are the $Na^+$ ions located?

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?

The coordination number in a simple cubic $(scp)$ lattice is .......

What is the coordination number of $Cu$ in a face-centered cubic $(fcc)$ lattice?

An $AB_2$ type structure is found in

$A$ cubic lattice has atoms of $A$ at the body centre,atoms of $B$ at the corners of the cube and atoms $C$ at all the face centres. What is its formula?