Dubnium not have enough experimental data to back their claim. After collecting more data, JINR proposed the name "nielsbohrium" (Ns) in honor of the Danish nuclear physicist Niels Bohr, a founder of the theories of atomic structure and quantum theory. When LBL first announced their synthesis of element 105, they proposed that the new element be named "hahnium" (Ha) after the German chemist Otto Hahn, the "father of nuclear chemistry", thus creating an element naming controversy. In the early 1970s, both teams reported synthesis of the next element, element 106, but did not suggest names. JINR suggested establishing an international committee
Otto Hahn the discovery of fission." Hahn, since 1960 honorary president of the MPG, was made an honorary citizen of the cities of Frankfurt am Main and Göttingen in 1959, and of the land and the city of Berlin in 1968. The British physicist Robert Spence FRS, concluded in his essay: Otto Hahn died on 28 July 1968. The day after his death, the Max Planck Society published the following obituary notice in all the major newspapers in Germany, Austria, and Switzerland: Fritz Strassmann, Hahn's pupil and assistant, wrote: Otto Robert Frisch, Lise Meitner's nephew, recollected: The Royal Society in London wrote