How is a spectrum obtained in NMR spectroscopy?

A. Low-frequency radio waves bombard the atom and cause nuclei in a low spin state to move to a higher spin state.
B. High-frequency ultraviolet rays bombard the atom and cause nuclei in a high spin state to move to a lower spin state.
C. High-frequency radio waves bombard the atom and cause nuclei in a high spin state to move to a lower spin state.
D. Low-frequency ultraviolet rays bombard the atom and cause nuclei in a low spin state to move to a higher spin state.

Question

How is a spectrum obtained in NMR spectroscopy?

 		A.	Low-frequency radio waves bombard the atom and cause nuclei in a low spin state to move to a higher spin state.
 		B.	High-frequency ultraviolet rays bombard the atom and cause nuclei in a high spin state to move to a lower spin state.
 		C.	High-frequency radio waves bombard the atom and cause nuclei in a high spin state to move to a lower spin state.
 		D.	Low-frequency ultraviolet rays bombard the atom and cause nuclei in a low spin state to move to a higher spin state.

vera_ewing · Answer

@JFraser It's C right?

jfraser · Answer

i forget the range of frequencies used in traditional NMR, sorry