Ordinary table salt (NaCl) comprises of sodium and chloride ions arranged in a face-centered cubic crystal lattice. That is, a sodium chloride crystal comprises of cubic unit cells having a sodium ion on each corner and at the center of each face and a chloride ion at the center of the cube and at the mid-point of each edge. The density of sodium chloride is 2.165 x 103 kg/m3. Compute the spacing between adjacent sodium and chloride ions in the crystal.