The density is 3.144 g / cm^3.
Explanation:
If effective number of atom in NaCl type structure, z = 4
a = 705.2 pm ⇒ In centimeter = 705.2 [tex]\times[/tex] 10^-10
Na = 6.023 [tex]\times[/tex] 10^23
density = (molecular weight) (z) / (Na) (a^3)
where molecular weight of KI is 166 g,
Z represents the atomic number
density = (molecular weight) (z) / (Na) (a^3)
= (166 [tex]\times[/tex] 4) / (6.023 [tex]\times[/tex] 10^23) [tex]\times[/tex] (705.2 [tex]\times[/tex] 10^-10)
density = 3.144 g / cm^3.
