Which type of centred unit cell is obtained by adding one constituent particle at the centre of each face of a primitive unit cell?
Body-centred unit cell
Face-centred unit cell
End-centred unit cell
None of the above
In a face-centred unit cell, one constituent particle is added to the centre of each face of a primitive unit cell in addition to the ones present at the corners. This type of unit cell has a total of four particles per unit cell. Therefore, option (b) is correct