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प्रश्न
The unit cell of a body-centred cubic system contains ______ atoms.
रिकाम्या जागा भरा
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उत्तर
The unit cell of a body-centred cubic system contains two atoms.
Explanation:
In a body-centred cubic (bcc) unit cell, there are 8 corner atoms. Each corner atom is shared by 8 unit cells, so each contributes `1/8`, i.e., `8 xx 1/8 = 1` atom.
1 atom at the centre of the cube fully belongs to the unit cell, i.e., 1 atom.
∴ Total atoms in bcc unit cell = 1 + 1
= 2
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