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| 1. |
Define unit cell |
| Answer» Unit Cell is the smallest part (portion) of a crystal lattice. It is the simplest repeating unit in a crystal. The entire lattice is generated by the repetition of the unit cell in different directions.Primitive Unit Cells: When the constituent particles occupy only the corner positions, it is known as Primitive Unit Cells.Centered Unit Cells: When the constituent particles occupy other positions in addition to those at corners, it is known as Centred Unit Cell. | |