Which of the following molecules would have the most downfield signal in a ¹H NMR?

Question

Quizplus · Accepted Answer

The most downfield signal in a ^1H NMR spectrum is influenced by the electronegativity of atoms attached to the carbon bearing the hydrogen. Fluorine is the most electronegative element among the options given, thus a hydrogen attached to a carbon that is also bonded to fluorine (as in option D) would experience the greatest deshielding and hence appear most downfield in the NMR spectrum.

Which of the Following Molecules Would Have the Most Downfield