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Number of atoms per unit cell of a body-centred cubic (BCC) lattice is
A1
B2
C4
D8
Answer & Solution
Correct answer: B. 2
1. Eight corner atoms each contribute 1/8 to the unit cell: 8 × 1/8 = 1.
2. One body-centre atom belongs entirely to the cell: 1.
3. Total = 1 + 1 = 2 atoms per unit cell.
_Source: Maharashtra Balbharati Std XII Chemistry, Ch 1 "Solid State" §1.6_
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