Potassium crystallizes in a $bcc$ lattice,hence the coordination number of potassium in potassium metal is

Which type of cubic lattice has the maximum number of atoms per unit cell?

Which among the following crystal lattices occupies all of the cubic holes by cations?

An ionic solid $AB$ crystallizes in a $NaCl$-type structure,where $A$ ions are at the corners of the cube. If all face-centered ions along one axis are removed,then the stoichiometry of the resulting solid will be .....

In the face-centred cubic $(FCC)$ lattice structure of gold, the closest distance between gold atoms is ('a' being the edge length of the cubic unit cell).

The tetrahedral voids formed by $ccp$ arrangement of $Cl^{-}$ ions in rock salt structure are