Rock salt structure is cubic. The X-ray diffraction angle and the Bragg angle formula will tell you the separation of the layers. That equals the side length of a unit cube.
From that information and the molecular weight, you can derive the density.
It would be easier to measure directly, it seems to me.
Potassium chloride crystallizes with the rock salt structure. When bathed in X-rays, the layers of atoms corresponding to the surfaces of the unit cell produce a diffracted beam of X-rays (¥ë=154 pm) at an angle of 6.97¨¬. From this, the density can be calculated and is ____ g/cm3.
1 answer
1 answer