Ralph Kronig did not hold a grudge against Pauli for this turn of events. In fact, Kronig and Pauli remained friends for many years into the future. They exchanged many ideas in physics through letters. But it remains an historic fact that Kronig had told Pauli about electron spin before Pauli had published his paper showing that two electrons can inhabit the same orbital (W. Pauli, "On the Connexion between the Completion of Electron Groups in an Atom with the Complex Structure of Spectra", "Z. Physik" 31, 765ff, 1925). Months later when Uhlenbeck and Goudsmit came up with particle spin, it seemed to verify Pauli's paper. Together with Rabi, Kronig gave the first solution (1927) of the Schrödinger equation for the rigid symmetric top.