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

Answer: Three
Explanation:
Among the given crystal systems:

  1. Cubic: In cubic crystal systems, all edges and angles are equal. Cubic crystals can have a body-centered unit cell, with a lattice point at the center of the cube and one at each corner.
  2. Tetragonal: Tetragonal crystals have two equal edges perpendicular to each other and a third edge that is different in length. Some tetragonal crystals can also have a body-centered unit cell.
  3. Orthorhombic: Orthorhombic crystals have three unequal edges perpendicular to each other. They can also have a body-centered unit cell.

The other crystal systems (hexagonal, rhombohedral, monoclinic, and triclinic) do not have a body-centered unit cell.

So, the three crystal systems where a body-centered unit cell can be found are Cubic, Tetragonal, and Orthorhombic.


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