M-N-R, or Molecular-Nuclear Resonance, is a scientific technique used to study the properties of molecules and their interactions at the atomic level. It combines principles from both molecular spectroscopy and nuclear magnetic resonance (NMR) to provide detailed information about molecular structures, dynamics, and environments. This method is particularly useful in fields like chemistry, biochemistry, and materials science, where understanding molecular behavior is crucial. By analyzing how molecules respond to external magnetic fields and radiofrequency radiation, researchers can gain insights into molecular configurations and reactions, aiding in the development of new materials and drugs.