 Magnetic inequivalence

Magnetic inequivalence refers to the phenomenon in which two or more nuclei or magnetic moments in a system exhibit different magnetic environments, leading to distinct magnetic properties and behaviors. This term is commonly encountered in the context of nuclear magnetic resonance (NMR) spectroscopy and electron paramagnetic resonance (EPR) spectroscopy. In NMR, for instance, nuclei of the same element can experience different local magnetic fields due to their chemical environments, which affects their resonant frequencies.