MHT CET202311 May 2023Morning ShiftChemistrySolid StateActual
What is atomic mass of an element with BCC structure and density 10 ~g ~cm ⁻³ having edge length 300 pm ?
Options
- A51.0 ~g ~mol ⁻¹
- B60.0 ~g ~mol ⁻¹
- C81.3 ~g ~mol ⁻¹
- D96.8 ~g ~mol ⁻¹
Correct answer
D. 96.8 ~g ~mol ⁻¹
Step-by-step solution
For bcc unit cell, n =2 . aligned & Density of bcc unit cell = = Mn a ^3 ~N _ A & M = a ^3 N _ A n & M = 10 ~g ~cm ⁻³ (3 10⁻⁸ ~cm )^3 6.022 10²³ atom mol ⁻¹ 2 atoms & M =81.3 ~g ~mol ⁻¹ aligned