Questions
The packing fraction for a body centred cube is
detailed solution
Correct option is C
Unit cell | Number of atoms at | No. of atoms per unit cell | Volume occupied by particles (%) | ||
Corners | Centres | Faces | |||
Simple cube | 8×1/8=1 | 0 | 0 | 1 | 52.4 |
Body centred cube (BCC) | 8×1/8=1 | 1 | 0 | 2 | 68 |
Face centred cube (FCC) | 8×1/8=1 | 0 | 6×1/2=3 | 4 | 74 |
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