If each edge of a cubic unit cell of an element having atomic mass 120 and density 6.25 ~g cc ⁻¹ measures 400 pm , then the crystal lattice is

Step-by-step solution

Atomic weight (m)=120N_A=6.022 10²³ Unit cell (a)=400 pm =400 10⁻¹⁰ ~m As we know d= Z M N_A a^3 6.25= Z 120 6.022 10²³ (400 10⁻¹⁰ )^3 Z=2 So, the crystal lattice is body centered.