Question

Number of crystal systems from the following where body centred unit cell can be found, is......
Cubic, tetragonal, orthorhombic, hexagonal, rhombohedral, monoclinic, triclinic.

Answer 1

Correct Answer: 3

Body-Centered Cubic (BCC) Crystal Systems 

A body-centered cubic (BCC) unit cell is a type of unit cell where an atom is located at each corner of the cube and one atom is located at the center of the cube. BCC arrangements are found in the following crystal systems:

• Cubic: This is the classic body-centered cubic structure.
• Tetragonal: A body-centered tetragonal structure exists where the cell is elongated along one axis.
• Orthorhombic: A body-centered orthorhombic structure exists where the cell has unequal sides but all angles are 90 degrees.

Body-centered unit cells are not found in the hexagonal, rhombohedral, monoclinic, or triclinic crystal systems.

Conclusion:

Therefore, the number of crystal systems where BCC unit cells can be found is 3.

Answer 2

Body-centered cubic (BCC) crystal structure is found in cubic, tetragonal, and orthorhombic systems. Thus, the number of crystal systems where BCC can be found is 3.