Trends in the Structure of Nuclei near Sn-100

Inevitable progress has been achieved in recent years regarding the available data on the structure of Sn-100 and neighboring nuclei. Updated nuclear structure data in the region is presented using selected examples. State-of-the-art experimental techniques involving stable and radioactive beam facilities have enabled access to those exotic nuclei. The analysis of experimental data has established the shell structure and its evolution towards N = Z = 50 of the number of neutrons, N, and the atomic number, Z, seniority conservation and proton-neutron interaction in the g(9/2) orbit, the super-allowed Gamow-Teller decay of Sn-100, masses and half-lives along the rapid neutron-capture process (r-process) path and super-allowed alpha decay beyond Sn-100. The status of theoretical approaches in shell model and mean-field investigations are discussed and their predictive power assessed. The calculated systematics of high-spin states for N = 50 isotopes including the 5(-) state and N = Z nuclei in the g(9/2) orbit is presented for the first time.