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 their discovery Hahn and Meitner were repeatedly nominated for the Nobel Prize in Chemistry in the 1920s by a number of scientists, among them Max Bergmann, Viktor Moritz Goldschmidt, and even Fajans himself. In 1949, the International Union of Pure and Applied Chemistry (IUPAC) named the new element definitely protactinium, and confirmed Hahn and Meitner as discoverers. In February 1921, Otto Hahn published the first report on his discovery of uranium Z (later known as Pa ), the first example of nuclear isomerism. Gerlach remarked that this was "a discovery that was not understood at the time but later became