Otto Hahn in an obituary: Hahn's death did not stop his public acclamation. Proposals were made at different times, first in 1971 by American chemists, that the newly synthesized element no. 105 should be named hahnium in Hahn's honor; in 1997 the IUPAC (International Union of Pure and Applied Chemistry) named it dubnium, after the Russian research center in Dubna (see element naming controversy). Although element 108 was given the name hassium (after Hesse) by its officially recognized German discoverers in 1992, a 1994 IUPAC committee recommended that it be named hahnium (Hn), in spite of the long-standing convention to give the
Otto Hahn the University of Marburg, where for two years he worked as assistant to his doctoral supervisor, Geheimrat Professor Theodor Zincke. His long-time scientific collaborator Nikolaus Riehl claimed that the family had "a Jewish antecedent", but this didn't hinder Hahn's academic career during the Nazi era. According to journalist Bernt Engelmann, Hahn was often thought of as Jewish because of his "Jewish sounding" surname, but he instead asserts that Hahn only had Jewish ancestors on his maternal side of the family despite "Giese" (his mother's maiden name) not being a traditional Jewish surname. Engelmann claimed that this Jewish ancestry was an