Determine the density of cesium chloride which crystallises in bcc type structure with the edge length 412.1 pm.The atomic masses of Cs & Cl are 133 & 35.5 respectively.

first calculate the molecular weight of CsCl ..

then density = mass / volume.

 mass of unit cell = molecular mass/avogadro no.

volume = (412.1)^3

now calculate....

3.99 g/cm³ Caesium chloride, Density