MHT CET202012 Oct 2020Evening ShiftChemistrySolid StateActual
What is the mass of an fcc unit cell if mass of one atom of an element is 6 10⁻²³ ~g ?
Options
- A24 10⁻²² ~g
- B4 10⁻²³ ~g
- C2 4 10⁻²² ~g
- D2 4 10⁻²³ ~g
Correct answer
C. 2 4 10⁻²² ~g
Step-by-step solution
In FCC, No. of atoms per unit cell =4 aligned Mass of unit cell &= Mass of 4 atoms =4 6 10⁻²³ ~g &=24 10⁻²³ ~g =2.4 10⁻²² ~g aligned