100 100 [1] [2] molecular ion m/z = 70 50 - molecular ion 50- m/z = 68 10 20 30 40 60 70 80 90 100 10 20 40 70 80 90 100 mlz m/z Relative abundance 8- 8- Relative abundance 3-

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Q: Draw the structure of the compound next to its matching spectrum. Mark peaks on the spectra.

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Q: 4.0 H₂C I 3.0 11 H₂ CH3 I CH CH3 III IV 2.0 ppm 1.0

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NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.