$A$ 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?

The coordination number of $Cs^+$ in the crystal of $CsCl$ is ......

An $fcc$ unit cell of aluminium contains the equivalent of how many atoms?

In the calcium fluoride structure,the coordination number of the cation and anion are respectively:

The number of hexagonal faces that are present in a truncated octahedron is

In a mineral $MX_2$,$M^{+2}$ ions are arranged in a $ccp$ structure and $X^{-}$ ions occupy the tetrahedral voids. What are the number of cations and anions per unit cell,the coordination number of the cation,and the percentage of occupied tetrahedral voids,respectively?