Question

An element with molar mass 27 g mol^-1 forms a cubic unit cell with edge length 4.05 x 10^-8 cm. If its density is 2.7 g cm^-3, what is the nature of the cubic unit cell ?

Answer 1

Face centered cubic cell/fcc

Detailed Answer :

Given Z = No. of atoms in unit cell

= Density = 2700 kg/m³  

M = Molar mass = 0.027

=  Edge length = 4.05 x 10^-10 m

So, type of cubic lattice is fcc.