JIPMER2008ChemistrySolid State
Total volume of atoms present in a face centred cubic unit cell of a metal is ( (r ) is atomic radius)
Options
- A( 16 3 r^3 )
- B( 20 3 r^3 )
- C( 24 3 r^3 )
- D( 12 3 r^3 )
Correct answer
A. ( 16 3 r^3 )
Step-by-step solution
In fcc unic cell (z=4 ) ( aligned Hence, occupied volume by sphere & =4 4 3 r^3 & = 16 3 r^3 aligned )