Question

Which of the following statements is true for the diffraction patterns in the crystal lattice?

(a) Diffraction patterns possess a center of symmetry

(b) Diffraction patterns doesn’t have center of symmetry

(c) Diffraction patterns are linear space

(d) Diffraction patterns contains α-rays

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I need to ask this question from Definitions topic in division X-Ray Diffraction of Solid State Chemistry

Answer 1

Correct answer is (a) Diffraction patterns possess a center of symmetry

The explanation: The diffraction patterns in reciprocal space possess a center of symmetry. This grandiose statement means that miller indices positive hkl and negative hkl reflections are equivalent, subject to the condition that anomalous dispersion is not present.