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

The correct coordination number for the zinc ion in the zinc blende crystal structure is:

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.

What are two types of crystal structures shown by ice at different pressures?

Which statement is correct for the antifluorite structure of $Na_2O$?

In the closest packed structure of a metallic lattice,the number of nearest neighbours of a metallic atom is