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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 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

Organic Chemistry: A Guided Inquiry
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
ChapterL3: Carbon (13c) Nmr Spectroscopy
Section: Chapter Questions
Problem 5E
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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
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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