An element A crystallises in fcc structure. 200 g of this element has 4.12 xx 10^24 atoms The density of A is 72 cm^(-3). Calculate the edge length of the unit cell.

An element A crystallises in fcc structure. 200 g of this element has

1.	An element A crystallises in fcc structure. 200 g of this element has 4.12 xx 10^24 atoms The density of A is 72 cm^(-3). Calculate the edge length of the unit cell.
Answer» SOLUTION :`RHO=(Zxxm)/(a^3xx10^(-30))"or" a=((Zxxm)/(rhoxx10^(-30)))^(1//3)=(4xx200//(4.12xx10^24))/(7.2xx10^(-30))"PM"`=299.9 pm