MHT CET202416 May 2024Morning ShiftChemistrySolid StateActual
Find the void volume of fcc unit cell in cm ^3 if the volume of fcc unit cell 1.25 10⁻²² ~cm ^3 .
Options
- A3.25 10⁻²³
- B2.16 10⁻²³
- C1.34 10⁻²³
- D4.20 10⁻²³
Correct answer
A. 3.25 10⁻²³
Step-by-step solution
For fcc unit cell, packing efficiency =74 % Percentage of unoccupied space (void volume) aligned & =100-74=26 % & =1.25 10⁻²² ~cm ^3 26 100 & =3.25 10⁻²³ ~cm ^3 aligned