Spin multiplicity and its practical implications

A system with n unpaired electrons has a spin equal to 5 = nil. Such a system has a spin multiplicity  

This inequality of interactions leads to a phenomenon whose quantum-mechanical nature will be addressed later (Chapter 7), and whose practical appearance is given here simply by description. Let us first make the distinction between half-integer 

The labeling of the individual sublevels can easily give rise to confusion. By far the most common labeling is with the quantum number ms, which runs in integer steps over the range 

Classes of metalloproteins. Transition ion prosthetic groups in proteins are 

---