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  •  Which of the following statements is true regarding primitive unit cells?Option: 1 They contain one or more constituent particles at positions

 Which of the following statements is true regarding primitive unit cells?

Option: 1

They contain one or more constituent particles at positions other than corners.


Option: 2

They contain constituent particles only at the corner positions.


Option: 3

They contain one constituent particle at the body-centre besides the ones at corners.


Option: 4

They contain one constituent particle present at the centre of each face besides the ones at corners.


Answers (1)

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Primitive unit cells are defined as unit cells that contain only constituent particles at the corner positions. This means that there are no particles at any other positions within the unit cell. Therefore, option b) is the correct statement. Option a) describes centred unit cells, while options c) and d) describe specific types of centred unit cells (body-centred and face-centred, respectively).

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Divya Prakash Singh

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