MHT CET202020 Oct 2020Morning ShiftChemistrySolid StateActual
What is the mass of bcc type unit cell of sodium if mass of one atom of sodium is 3 819 10⁻²³ ~g ?
Options
- A7 038 10⁻²³ ~g
- B7 638 10⁻²³ ~g
- C3 819 10⁻²³ ~g
- D1.5276 10⁻²² ~g
Correct answer
B. 7 638 10⁻²³ ~g
Step-by-step solution
No. of atoms per bcc type of unit cell, n =2 Mass of bcc unit cell = Mass of two atoms aligned Mass of bcc unit cell of Na &=3.819 10⁻²³ 2 &=7.638 10⁻²³ ~g aligned