spin

of a nucleus
synonym: nuclear spin
https://doi.org/10.1351/goldbook.08418
Intrinsic angular momentum of a nucleus (or other sub-atomic particle).
Notes:
  1. The magnitude of nuclear spin is (h/2π)I(I+1) where I is the spin quantum number and h is the Planck constant.
  2. In nuclear magnetic resonance spectroscopy, only nuclei with spin I>0 are observable.
  3. The spin of a nucleus is dependent on the numbers and alignments of the spins of its individual protons and neutrons.
  4. Nuclei with a spin of ½ generate the simplest nuclear magnetic resonance spectra and are thus the most commonly studied.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 705 [Terms] [Paper]
Citation: 'spin' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08418 RIS BibTex EndNote
Div. VTextXMLJSON