This dissertation reports the results of a search for the controversial parity inversion in the unbound N = 7 isotones 9He and 10Li. Proton removal reactions from two different radioactive ion beams (11Be, Elab = 44 MeV/u and 12B, Elab = 45 MeV/u) on a beryllium target were used to directly and selectively populate unbound resonances of a given neutron configuration in the nuclides of interest. Neutrons and fragments were measured in coincidence using the MoNA-LISA-Sweeper setup, and invariant mass spectroscopy or the time-of-flight method were used to determine the decay energy or relative velocity of the neutron decays. Results on multiple unbound resonances in the 9He and 10Li systems will be presented, as well as a discussion of ground state level inversion.
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