<P> Nuclear magnetic resonance spectroscopy , most commonly known as NMR spectroscopy or magnetic resonance spectroscopy ( MRS ) , is a spectroscopic technique to observe local magnetic fields around atomic nuclei . The sample is placed in a magnetic field and the NMR signal is produced by excitation of the nuclei sample with radio waves into nuclear magnetic resonance , which is detected with sensitive radio receivers . The intramolecular magnetic field around an atom in a molecule changes the resonance frequency , thus giving access to details of the electronic structure of a molecule and its individual functional groups . As the fields are unique or highly characteristic to individual compounds , in modern organic chemistry practice , NMR spectroscopy is the definitive method to identify monomolecular organic compounds . Similarly , biochemists use NMR to identify proteins and other complex molecules . Besides identification , NMR spectroscopy provides detailed information about the structure , dynamics , reaction state , and chemical environment of molecules . The most common types of NMR are proton and carbon - 13 NMR spectroscopy , but it is applicable to any kind of sample that contains nuclei possessing spin . </P>
<P> Nuclear magnetic resonance spectroscopy , most commonly known as NMR spectroscopy or magnetic resonance spectroscopy ( MRS ) , is a spectroscopic technique to observe local magnetic fields around atomic nuclei . The sample is placed in a magnetic field and the NMR signal is produced by excitation of the nuclei sample with radio waves into nuclear magnetic resonance , which is detected with sensitive radio receivers . The intramolecular magnetic field around an atom in a molecule changes the resonance frequency , thus giving access to details of the electronic structure of a molecule and its individual functional groups . As the fields are unique or highly characteristic to individual compounds , in modern organic chemistry practice , NMR spectroscopy is the definitive method to identify monomolecular organic compounds . Similarly , biochemists use NMR to identify proteins and other complex molecules . Besides identification , NMR spectroscopy provides detailed information about the structure , dynamics , reaction state , and chemical environment of molecules . The most common types of NMR are proton and carbon - 13 NMR spectroscopy , but it is applicable to any kind of sample that contains nuclei possessing spin . </P>
what region of the electromagnetic spectrum is used in nmr spectroscopy
what region of the electromagnetic spectrum is used in nmr spectroscopy
radio
radio