The discussion focuses on determining the spin number of molecules, specifically using water as an example. It explores the relevance of nuclear and electron spins in various contexts, including spectroscopy and MRI applications.
Participants express differing views on the relevance of nuclear spins versus electron spins, particularly in the context of spectroscopy and MRI. The discussion remains unresolved regarding the implications of these spins in practical applications.
There is a lack of consensus on the importance of nuclear spins in determining molecular spin numbers, and the discussion highlights potential dependencies on specific applications like MRI.
DrClaude said:One usually considers only the total spin of the electrons, which is what is relevant spectroscopically. The spin of the nuclei might be relevant in some cases, but I have never seen the total spin of a molecule, or an atom for that matter.
The spin of the individual protons and neutrons is not relevant,only the total spin of the nuclei.
No, MRI probes individual nuclear spins.TheCanadian said:Oh really? So if considering MRI for example, doesn't the energy of molecules in the person's body depend on the entire spin of the molecule under influence from the magnetic field?