Which of the following statements are correct about NMR spectroscopy? 1. All atomic nuclei have a magnetic moment. 2. 'H chemical shifts change monotonically with the percent s character of the carbon to which they are attached 3. 13c'H coupling constants change monotonically with the percent s character of the carbon to which they are attached 4. The most useful features of 'H NMR are the number of signals, the signal integration, and the coupling patterns. 5. The central CH, group of a 1-monosubstituted propane often has 6 lines. О 3, 4, 5 O 1, 4, 5 Correct Answer: 3, 5 О 1, 2, 3, 4, 5 O All atomic nuclei have a magnetic moment. О 2, 3, 4 3, 5 O O O O
Which of the following statements are correct about NMR spectroscopy? 1. All atomic nuclei have a magnetic moment. 2. 'H chemical shifts change monotonically with the percent s character of the carbon to which they are attached 3. 13c'H coupling constants change monotonically with the percent s character of the carbon to which they are attached 4. The most useful features of 'H NMR are the number of signals, the signal integration, and the coupling patterns. 5. The central CH, group of a 1-monosubstituted propane often has 6 lines. О 3, 4, 5 O 1, 4, 5 Correct Answer: 3, 5 О 1, 2, 3, 4, 5 O All atomic nuclei have a magnetic moment. О 2, 3, 4 3, 5 O O O O
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter19: Nuclear Magnetic Resonance Spectroscopy
Section: Chapter Questions
Problem 19.5QAP
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![Which of the following statements are correct about NMR spectroscopy?
1. All atomic nuclei have a magnetic moment.
2. 'H chemical shifts change monotonically with the percent s character of the carbon to which they are attached
3. 13c'H coupling constants change monotonically with the percent s character of the carbon to which they are attached
4. The most useful features of 'H NMR are the number of signals, the signal integration, and the coupling patterns.
5. The central CH, group of a l-monosubstituted propane often has 6 lines.
3, 4, 5
1, 4, 5
Correct Answer: 3, 5
1, 2, 3, 4, 5
All atomic nuclei have a magnetic moment.
2, 3, 4
3, 5](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F17b14c98-7e1f-4ff3-a9cd-76c2fbee0e9d%2Fa1f22fc3-b0c4-42fc-aecd-ab3ebba5747a%2Fu5boxuc_processed.png&w=3840&q=75)
Transcribed Image Text:Which of the following statements are correct about NMR spectroscopy?
1. All atomic nuclei have a magnetic moment.
2. 'H chemical shifts change monotonically with the percent s character of the carbon to which they are attached
3. 13c'H coupling constants change monotonically with the percent s character of the carbon to which they are attached
4. The most useful features of 'H NMR are the number of signals, the signal integration, and the coupling patterns.
5. The central CH, group of a l-monosubstituted propane often has 6 lines.
3, 4, 5
1, 4, 5
Correct Answer: 3, 5
1, 2, 3, 4, 5
All atomic nuclei have a magnetic moment.
2, 3, 4
3, 5
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