What is the coordination number of each atom in a $bcc$ structure?

If the pressure on a $NaCl$ structure is increased,then its coordination number will

What is the total number of particles present in a $bcc$ unit cell?

If $Z$ is the number of atoms in the unit cell that represents the closest packing sequence $ABCABC$,the number of tetrahedral voids in the unit cell is equal to

$A$ solid has a structure in which $W$ atoms are located at the corners of a cubic lattice, oxygen atoms at the edge centres, and $Na$ atoms at the body centre. The formula of the compound is:

The number of equidistant oppositely charged ions in a sodium chloride crystal is