If the side length of a face-centered cubic $(fcc)$ unit cell of a metal is $400 \ pm$, the approximate radius of the metal atom in $pm$ is $(\sqrt{2} = 1.414)$.

What is the crystal structure of $Na_2O$?

The structure of $TlCl$ is similar to $CsCl$. What is the coordination number of $Tl^{+}$?

In a cubic structure of a compound made from $X$ and $Y$,where $X$ atoms are at the corners of the cube and $Y$ atoms are at the face centers of the cube,the molecular formula of the compound is:

The packing efficiency and coordination number of face-centred cubic $(FCC)$ lattice is

If three elements $A, B, C$ crystallize in a cubic solid lattice with $B$ atoms at the cubic centers,$C$ atoms at the center of edges,and $A$ atoms at the corners,then the formula of the compound is