JEE Main · 2023 · 06 Apr 2023 · Shift 2 · Solid State

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Number of crystal systems from the following where body centred unit cell can be found, is.....

Cubic, tetragonal, orthorhombic, hexagonal, rhombohedral, monoclinic, triclinic.

Answer: 3

Solution

A body-centred unit cell carries an additional lattice point at the centre of the cell, and the Bravais lattices allow this only for particular crystal systems. Of those listed, the cubic, tetragonal and orthorhombic systems each possess a body-centred type, whereas the hexagonal, rhombohedral, monoclinic and triclinic systems do not. The number of crystal systems in which a body-centred unit cell is found is 3.

JEE Main · 2023 · 06 Apr 2023 · Shift 2 · Integer answer

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