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 original title) was published in the "Proceedings of the Royal Society" in the issue of 24 March 1905 (76 A, pages 115-117). It was the first of more than 250 scientific publications of Otto Hahn in the field of radiochemistry. In May 1905, Ramsay wrote to Ernest Rutherford: "Hahn is a capital fellow and has done his work admirably. I am sure that you would enjoy having him to work with you." Rutherford agreed and, from September 1905 until mid-1906, Hahn worked in his team at McGill University in Montreal, Canada where he discovered thorium C (later identified as polonium-212),