The coordination number of the point $B$ for a solid with the following structure is:

Which of the following expressions is correct in the case of a $CsCl$ unit cell (edge length '$a$')?

The interionic distance for $Cesium$ $chloride$ $(CsCl)$ crystal will be (where $a$ is the edge length of the unit cell):

In which of the following crystals are alternate tetrahedral voids occupied?

The coordination number of a hexagonal close-packed $(hcp)$ crystal structure is......

$A$ compound of $A$ and $B$ crystallises in a cubic lattice in which $A$ atoms occupy the lattice points at the corners of the cube. The $B$ atoms occupy the centre of each face of the cube. The probable empirical formula of the compound is