Effective number of atoms in a body-centered cubic (BCC) unit cell is equal to ________

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RRB Paper · Accepted Answer

The effective number of atoms in a body-centered cubic (BCC) unit cell is equal to 2. Detailed Explanation A BCC cell has eight lattice points at the eight corners of the cube and one lattice point at the center within the cell. There are no points in the face. An atom at the lattice point within the cell belongs completely to the cell and the atoms at the corners of the cell contribute 1/8th each. The effective number of atoms per BCC cell is then 8 corners × 1/8 per corner atom = 8 × 1/8 = 1 atom 1 body centre atom = 1 × 1 = 1 atom Therefore, the total number of atoms present per unit cell = 2 atoms.

Effective number of atoms in a body-centered cubic (BCC) unit cell is equal to ________

4

6

1

2

The correct answer is `No. 4: 2`

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Effective number of atoms in a body-centered cubic (BCC) unit cell is equal to ________

4

6

1

2

The correct answer is No. 4: 2

The correct answer is `No. 4: 2`