From the density of cesium chloride (3.97 g/cm3), calculate the distance between the centers of adjacent Cs+ and Cl- ions in the solid. Compare this value with the expected distance based on the sizes of the ions (Fig. 13.8). The ionic radius of Cs+ is 169 pm.
Figure 13.8

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Lit 60 31 140 136 Na gA* CIT 95 65 50 184 18I Ca Br 133 62 198 195 Rbt Te2- 148 113 81 71 62 221 216