How many formula units are present in the unit cell of fluorite $(CaF_2)$?

The ratio of the number of atoms present in a simple cubic,body-centered cubic,and face-centered cubic unit cell is,respectively:

$A$ compound $M_pX_q$ has a cubic close packing $(ccp)$ arrangement of $X$. Its unit cell structure is shown below. The empirical formula of the compound is

The ratio of the effective number of atoms in a unit cell of $fcc$ and $bcc$ lattices is

In a body-centered cubic $(BCC)$ unit cell,the atom at the body center is shared by how many unit cells?

What is the coordination number of $Ag^+$ in a $AgCl$ crystal lattice?