[en] The purpose of the investigation was to study gamma spectrum and angular γγ correlations in the ¹⁰⁰Rh decay into ¹⁰⁰Ru levels. The ¹⁰⁰Rh sources were obtained from the (pn) reaction on irradiating ruthenium targets at 90% enrichment by ¹⁰⁰Ru. The gamma spectrum was measured on a Ge(Li) spectrometer. Angular correlations were taken on a device with Ge(Li)-NaJ(Tl) detectors. The following transitions have been found for the first time: 218(0.3+-0.001), 234 (0.10+-0.02), 378(0.12+-0.02), 638(0.11+-0.02), and 1024(0.04+-0.02) keV. (In parenthesis U the intensities of these transitions with respect to the γ transitions at the energy of 539 keV are enclosed). Basing on the analysis of the results, spins and parities of some levels as well as multipolarity of several ¹⁰⁰Ru transitions have been determined. The information obtained enabled one to supplement the ¹⁰⁰Rh decay scheme