An element crystallises in fcc type of unit cell. The volume of one unit cell is 24.99 10⁻²⁴ ~cm ³ and density of the element 7 2 ~g ~cm ⁻³ . Calculate the number of unit cells in 36 ~g of pure sample of element?

Step-by-step solution

(C) Vol. of element = Mass Density = 36 ~g 7.2 ~g ~cm ⁻³ =5 ~cm ³ No. of unit cells in 36 ~g of pure sample of element = Total Vol. of element Vol. of one unit cell = 5 ~cm ³ 24.99 10⁻²⁴ ~cm ³ =2.0 10²³