MHT CET20244 May 2024Morning ShiftChemistrySolid StateActual
Calculate molar mass of an element having density 8.6 ~g ~cm ⁻³ if it forms bcc structure [ a ^3 N _ A =22.0 ~cm ^3 ~mol ⁻¹ ]
Options
- A106.18 ~g ~mol ⁻¹
- B94.6 ~g ~mol ⁻¹
- C88.25 ~g ~mol ⁻¹
- D80.16 ~g ~mol ⁻¹
Correct answer
B. 94.6 ~g ~mol ⁻¹
Step-by-step solution
For bec unit cell, n =2 . aligned & Density ( )= M n a ^3 N _ A & 8.6 ~g ~cm ⁻³= M 2 22 ~cm ^3 ~mol ⁻¹ & M = 8.6 22 2 = 189.2 2 =94.6 ~g ~mol ⁻¹ aligned