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Question

Where are the particles present in a body-centered unit cell?


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Solution

Centered unit cell:

  • Body-centered cube is a type of arrangement of atoms in crystal in which atoms are present at the corner of cubes along with the center of cube.

Body-centered unit cell:

  • “Such a unit cell contains one constituent particle (atom, molecule, or ion) at its body center beside the ones that are at its corners.”
  • “A body-centered cubic (bcc) unit cell has an atom at each of its corners and also one atom at its body center.”
  • A body-centered unit cell is described in the image:

Example:

Square packed sheets are arranged on the top of each other such that a sphere in the next layer rests on the center of a square in the previous layer it forms a body-centered cubic unit cell.


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