Darmstadtium team proposed the name "becquerelium" after Henri Becquerel. The American team in 1997 proposed the name "hahnium" after Otto Hahn (previously this name had been used for element 105). The name "darmstadtium" (Ds) was suggested by the GSI team in honor of the city of Darmstadt, where the element was discovered. The GSI team originally also considered naming the element "wixhausium", after the suburb of Darmstadt known as Wixhausen where the element was discovered, but eventually decided on "darmstadtium". The new name was officially recommended by IUPAC on August 16, 2003. Darmstadtium has no stable or naturally occurring isotopes. Several
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