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How many parameters are used to characterize a unit cell?

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in Chemistry – Class 12 by (188k points)
How many parameters are used to characterize a unit cell?

(a) Six

(b) Three

(c) Two

(d) Nine

I have been asked this question in an internship interview.

Enquiry is from Solid State topic in section Solid State of Chemistry – Class 12

1 Answer

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Right answer is (a) Six

Easiest explanation: A unit cell is characterized by six parameters i.e. the three common edge lengths a, b, c and three angles between the edges that are α, β, γ. These are referred to as inter-axial lengths and angles, respectively. The position of a unit cell can be determined by fractional coordinates along the cell edges.

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