Question

Fcc has volume of 24x10*-24 and density is 7.2g, find no of atoms in 200g of element

Answer 1

Answer:

4.6*10^24 atoms

Explanation:

density= z*mass/a^3*N

7.2=4*200/24*10^-24*N

N=800*10^24/7.2*24=10^26/21.6=4.6*10^24 atoms