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 in mufti on a secret mission to test a pot that heated and released a cloud of arsenicals. His military clothing was returned by his batman Rehfeldt, who remained a lifelong friend. In December 1916, when posted to Berlin, Hahn was able to resume radiochemical research in his institute. In 1917–1918, Hahn and Meitner isolated a long-lived activity, which they named "proto-actinium". Already in 1913, Kazimierz Fajans and Göhring had isolated a short-lived activity from uranium X2 (later known as Pa), and called the substance "brevium". The two activities were different isotopes of the same undiscovered element number 91. For