What is the number of atoms per unit cell in a face-centered cubic $(FCC)$ crystal lattice?

The number of equidistant oppositely charged ions in a sodium chloride crystal is

In a cubic crystal structure,'$W$' atoms are at the corners of the cube,'$O$' atoms are at the edges,and '$Na$' atoms are at the body center. Determine the formula of this crystal.

What is the coordination number of sodium ions in the case of sodium chloride structure?

$A$ compound is formed by elements $A$ and $B$. This crystallises in the cubic structure where the $A$ atoms are at the corners of the cube and $B$ atoms are at the body centres. The simplest formula of the compound is

In the rock salt structure,the $ccp$ arrangement of $Cl^{-}$ ions creates tetrahedral voids,which are....