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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Contributors

Feedback

Unit Cells

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Beginner

Intermediate

Advanced

What is an unit cell?

a: A regular arrangement of atoms in a crystal Explanation

Explanation

b: A cell of atoms in a lattice Explanation

Explanation

c: The smallest possible element of a lattice that is repeated in all directions Explanation

Explanation

d: None of the above Explanation

Explanation

Which of these are true about an unit cell?

a: A repetitive arrangement of them can build the whole crystal Explanation

Explanation

b: An unit cell cannot be divided into smaller pieces that serve as unit cells themselves Explanation

Explanation

c: Both (a) and (b) Explanation

Explanation

d: None of the above Explanation

Explanation

How many atoms are shared by a cubic primitive unit cell with its neighbours?

a: 0 Explanation

Explanation

b: 1/8 Explanation

Explanation

c: 8 Explanation

Explanation

d: None of the above Explanation

Explanation

What is the contribution of an atom on the vertice of an unit cell to the unit cell?

a: 0 Explanation

Explanation

b: 1/8 Explanation

Explanation

c: 1 Explanation

Explanation

d: None of the above Explanation

Explanation

What is the contribution of an atom in the middle of a face of an unit cell to the unit cell?

a: 0 Explanation

Explanation

b: 1/8 Explanation

Explanation

c: 1/4 Explanation

Explanation

d: 1/2 Explanation

Explanation

Which of these are primitive unit cells?

a: Simple cubic unit cell Explanation

Explanation

b: Wigner-Seitz unit cell Explanation

Explanation

c: Both (a) and (b) Explanation

Explanation

d: None of the above Explanation

Explanation

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