Find the radius of an atom in $fcc$ unit cell having edge length $393 \ pm$. (in $pm$)

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

$A$ solid has a structure in which $W$ atoms are located at the corners of a cubic lattice,$O$ atoms at the centre of edges,and $Na$ atom at the centre of the cube. The formula for the compound is

In the zinc blende structure,zinc atoms fill up:

$A$ 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 a face-centered cubic lattice,a unit cell is shared equally by how many unit cells?