How many chloride ions are there around a sodium ion in a sodium chloride crystal?

Predict the close-packed structure of an ionic compound $A^{+} B^{-}$ in which the radius of cation and anion are $148 \ pm$ and $195 \ pm$ respectively.

In a hexagonal close packing $(hcp)$ lattice,each sphere touches ................... spheres in its own layer.

If the side length of a face-centered cubic $(fcc)$ unit cell of a metal is $400 \ pm$, the approximate radius of the metal atom in $pm$ is $(\sqrt{2} = 1.414)$.

In $NaCl$ the centres of two nearest like charged ions are present at a distance of

Choose the correct statement for the given cubical structure.