In diamond, carbon atom occupy FCC lattice points as well as alternate tetrahedral voids. If edge length of the unit cell is 356 pm, then radius of carbon atom is
In which of the following structures coordination number for cations and anions in the packed structure will be same ?
(a) Cl− ions form fcc lattice and Na+ ions occupy all octahedral voids of the unit cell
(b) Ca2+ ions form fcc lattice and F− ions occupy all the eight tetrahedral voids of the unit cell
(c) O2− ions form fcc lattice and Na+ ions occupy all the eight tetrahedral voids of
(d) S2− ions form fcc lattice and Zn2+ ions go into alternate tetrahedral voids of the unit cell