Cesium Chloride, bromide, and iodide form interpenetrating simple cubic crystals instead of interpenetratingface-centered cubic crystals like the other alkali halides. The length of the side ofthe...

Cesium Chloride, bromide, and iodide form interpenetrating simple cubic crystals instead of interpenetratingface-centered cubic crystals like the other alkali halides. The length of the side ofthe unit cell of CsCl is 412.1pm.

a.) What is the density

b.) calculate the ion radius of Cs+, assuming that the ions touch along a diagonal through the unit cell and that the ion radius of Cl is 181 pm.