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 Societies and the city of Frankfurt/Main, the Otto Hahn Medal, and the Otto Hahn Award of the Max Planck Society and, since 1988, the Otto Hahn Peace Medal in Gold of the United Nations Association of Germany (DGVN) in Berlin. Many cities and districts in the German-speaking countries have named secondary schools after him, and streets, squares, and bridges throughout Europe bear his name. More than twenty states worldwide have honored Otto Hahn by issuing coins, medals or stamps with his portrait. An island in the Antarctic (near Mt. Discovery) was also named after him, as were two Intercity trains