Question

Europium crystallizes in a BCC lattice. The density of europium is 5.26 g/cm³ . Calculate the unit cell edge length. (Atomic mass = 152)

Answer 1

 Atomic mass (M) = 152 

To find: Edge length of unit cell (a) = ?

 Formula:  

i. Mass of 1 atom = Atomicmass/ Avogadro'snumber

ii. Volume = Mass/Density

iii. Volume = a³  

Calculation: 

From formula (i),