For 10 points, name this property, thequantum number representing the intrinsic angular momentum of a particle.
When this property is nonzero, an applied magnetic field creates an even number of sublevels inthe anomalous Zeeman effect. The precession of this quantity's vector generates signals in NMRspectroscopy, in which coupling between particles with this property causes splitting. It was firstdiscovered in an experiment in which a furnace launched a beam of sliver atoms through aninhomogenous magnetic field, performed by (*) Stern and Gerlach. It is represented by up or downarrows in configuration diagrams, and each subshell of an orbital can contain only two electrons due to thefact that this property for an electron is either Â½ or negative Â½. For 10 points, name this property, thequantum number representing the intrinsic angular momentum of a particle.
When this property is nonzero, an applied magnetic field creates an even number of sublevels inthe anomalous Zeeman effect.
spin angular momentum [or intrinsic angular momentum before mention; prompt on "angular momentum" or "momentum" before mention]