Question

In NMR spectroscopy, the spinning nuclei in a strong magnetic field must be irradiated by which of the following?

(a) Perpendicular and stronger field

(b) Perpendicular and weaker field

(c) Parallel and stronger field

(d) Parallel and weaker field

The question was asked in unit test.

I'm obligated to ask this question of Principle of Nuclear Magnetic Resonance Spectrometer topic in portion Nuclear Magnetic Resonance Spectrometer of Analytical Instrumentation

Answer 1

Correct option is (b) Perpendicular and weaker field

To explain I would say: In NMR spectroscopy, the spinning nuclei in a strong magnetic field must be irradiated by a weaker field which is perpendicular to it. This permits the identification of atomic configurations in molecules.