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Which of the Following Is Not True Regarding 1H NMR δ\delta

Question 46

Multiple Choice

Which of the following is not true regarding 1H NMR spectroscopy?


A) a "downfield" peak appears at a lower value of δ\delta
B) on a 300 MHz instrument, a proton that adsorbs irradiation at a frequency 900 Hz higher than the adsorption of TMS appears at δ\delta 3 ppm.
C) " δ\delta for a particular proton is independent of the magnetic field strength of the instrument used."
D) "deshielding" leads to peaks at higher values of δ\delta

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