UPSC Combined Geo-Scientist, Mains · 2017 · Mains Paper II
Q13(c). Nuclear spin and NMR activity
Question
Why is the hydrogen nucleus NMR-active while ¹⁶O and ¹²C nuclei are inactive?
Answer in brief
¹H has spin I=1/2 and a magnetic moment; ¹⁶O and ¹²C have I=0.
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CoversNuclear spinNMR activityNMR spectroscopy
All parts of Question 13
- 13(a) Debye–Huckel law and ionic strength10 marks
- 13(b) Fluorescence and phosphorescence lifetimes5 marks
- 13(c) Nuclear spin and NMR activity5 marks