Density of Li atom is 0 53 g/cm^3 The edge length of Li is 3 5 Find - Chemistry - The Solid State

Question

Density of Li atom is 0 53 g/cm^3 The edge length of Li is 3 5 Find
out the no of Li atoms in a unit cell

Yasodharan · Accepted Answer

Dear Student,

The computation are expressed below,

ρ=0 53 gcm3,   a=3 5 Ao=3
5×108 cm,   NA=6
023×1023Atomic weight of Lithium = 6
94n=ρ×volume×NAatomic weight=0 53×(3
5×108)3×6 023×10236 94n=2

Hence the number of Lithium atoms = 2

Regards

Density of Li atom is 0.53 g/cm^3. The edge length of Li is 3.5 . Find out the no. of Li atoms in a unit cell.