If the crystallises in zinc blende structure with `I^-` ions at lattice points. What fraction of tetrahedral voids is occupied by `Ag^+` ions ?

If silver iodide crystallizes in zinc blende structure with I^- ions forming the lattice, then what fraction of tetrahedral voids is occupied by Ag^+ ions?

Silver iodide crystallizes in the cubic close packed zinc sulphide structure. Assuming that ions occupy the lattice points, what fraction of the tetrahedral sites is occupied by Ag^+ ions?

AgI crystallises in the cubic close-packed zinc blend structure. Assuming that the iodide ions occupy the lattice points, fraction of the tetrahedral sites occupies by sliver ions are

In Zinc blende , the percentage of tetrahedral voids occupied by Zn^(2+) ions is :