Explanation:
For AX type ceramic material, the number of formula per unit cells is as follows.
or,
where, n' = no. of formula units per cell
= molecular weight of cation = 90.5 g/mol
= molecular weight of anion = 37.3 g/mol
= volume of cubic cell = 3.55
a = edge length of unit cell =
= Avogadro's number =
= density = 3.55
Now, putting the given values into the above formula as follows.
=
= 0.9
= 1 (approx)
Therefore, we can conclude that out of the given options crystal structure of cesium chloride is possible for this material.