The activities Mo and Tc produced from neutron capture by natural Mo were chemically separated and studied using Ge(Li) p-ray detectors. Out of 185 transitions observed in the decay of Mo, 170 were assigned to 44 excited levels in Tc. For the decay of Tc, 26 of 27 transitions were placed among 10 excited levels in Hu. The interpretation of thẽ Tc level scheme using the shell. -model approach is not satisfactory even for a five-particle calculation. Systematics of odd-A level. structures in the region of A =101 indicate that the level structure of~O~T c could be due partly to the onset of col.lective effects.RADIOACTIVITY~Mo,~~Tc [from natural Mo(n, y)]; measured Ey, I y coin; deduced levels, logft's, 4,