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1. Give 2 advantages of using Neutrons rather than X-rays for diffraction studies. 2. Explain the terms lambda, theta and d as used in the Bragg equation. 3. What do ellipsoids represent in a crystal structure beyond the position of the atoms? 4. Explain the meaning of R-factors and how they are used in a refinement of a crystal structure. 5. Describe what is meant by an asymmetric unit in crystallography and how it differs from a unit cell. 6. Briefly explain what the "Phase Problem" is in crystallography 7. In relation to part (6) explain what a Patterson synthesis is and when it is most applicable in chemical crystallography.

1. Give 2 advantages of using Neutrons rather than X-rays for diffraction studies. 2. Explain the terms lambda, theta and d as used in the Bragg equation. 3. What do ellipsoids represent in a crystal structure beyond the position of the atoms? 4. Explain the meaning of R-factors and how they are used in a refinement of a crystal structure. 5. Describe what is meant by an asymmetric unit in crystallography and how it differs from a unit cell. 6. Briefly explain what the "Phase Problem" is in crystallography 7. In relation to part (6) explain what a Patterson synthesis is and when it is most applicable in chemical crystallography.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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1. Give 2 advantages of using Neutrons rather than X-rays for diffraction studies. 2. Explain the terms lambda, theta and d as used in the Bragg equation. 3. What do ellipsoids represent in a crystal structure beyond the position of the atoms? 4. Explain the meaning of R- factors and how they are used in a refinement of a crystal structure. 5. Describe what is meant by an asymmetric unit in crystallography and how it differs from a unit cell. 6. Briefly explain what the "Phase Problem" is in crystallography 7. In relation to part (6) explain what a Patterson synthesis is and when it is most applicable in chemical crystallography.
Transcribed Image Text:1. Give 2 advantages of using Neutrons rather than X-rays for diffraction studies. 2. Explain the terms lambda, theta and d as used in the Bragg equation. 3. What do ellipsoids represent in a crystal structure beyond the position of the atoms? 4. Explain the meaning of R- factors and how they are used in a refinement of a crystal structure. 5. Describe what is meant by an asymmetric unit in crystallography and how it differs from a unit cell. 6. Briefly explain what the "Phase Problem" is in crystallography 7. In relation to part (6) explain what a Patterson synthesis is and when it is most applicable in chemical crystallography.
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