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

In $CsCl$ structure,the coordination number of $Cs^{+}$ is

What is the total number of unit cells shared by each corner particle of a $bcc$ unit cell?

What is the total number of particles present in a base-centred unit cell?

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