The number of carbon atoms per unit cell of diamond unit cell is

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

$A$ compound contains $Ca, Ti$ and $O$ elements. If $Ca^{2+}$ ions are at the corners of the cube,$Ti$ ions are at the body center,and $O^{2-}$ ions are at the face centers,then the molecular formula of the compound and the oxidation state of $Ti$ are respectively ........

The coordination number of an atom in a body-centered cubic $(BCC)$ structure is:
[Assume that the lattice is made up of atoms.]

Which statement is correct for $Fe_3O_4$?

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