By increasing the pressure on $NaCl$ crystal,its coordination number will

The coordination number of a metal crystallising in a hexagonal close-packed $(HCP)$ structure is

What is the total number of ions present in one unit cell of sodium chloride lattice?

The number of atoms present in a simple cubic unit cell of a molecular substance is.....

The ratio of anion radius to cation radius of a crystal is $10 : 9.3$. Then, the coordination number of the cation in the crystal is

$A$ binary compound $(A^{+} B^{-})$ has a zinc blende structure where $B^{-}$ ions form the lattice and $A^{+}$ ions occupy $25\%$ of the tetrahedral voids. What is the formula of the compound?