MHT CET20227 Aug 2022Morning ShiftChemistrySolid StateActual
Calculate the density of an element with molar mass 27 ~g ~mol ⁻¹ having 4 atoms in a unit cell with edge length 405 pm
Options
- A4.56 ~g ~cm ⁻³
- B2.69 ~g ~cm ⁻³
- C1.53 ~g ~cm ⁻³
- D3.10 ~g ~cm ⁻³
Correct answer
B. 2.69 ~g ~cm ⁻³
Step-by-step solution
We know aligned d & = Z V M N _ A & = 4+27 (4.05 10⁻⁸ )^3 6.02 10²³ ~d & =2.70 ~g / cm ^3 aligned