The number of atoms in body-centred and face-centred cubic unit cells are, respectively:

The edge lengths of a simple cubic $(sc)$ and a face-centered cubic $(fcc)$ unit cell are equal. The ratio of the volume occupied by atoms in these two structures is .....

The coordination number of a metal crystallizing in a hexagonal close-packed $(hcp)$ structure is:

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

In a face-centered cubic unit cell,what fraction of an atom at the corner is shared by the unit cell?

In a $ccp$ lattice of $X$ and $Y$,$X$ atoms are present at the corners while $Y$ atoms are at face centers. What would be the formula of the compound if one of the $X$ atoms from a corner is replaced by a $Z$ atom?