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hahnium
noun
Dubnium.
Exact(3)
In 1970 a group of investigators at the Lawrence Radiation Laboratory of the University of California at Berkeley announced that they had synthesized isotope 260 of element 105, whereupon they proposed the name hahnium for the element, in honour of Otto Hahn, the discoverer of nuclear fission.
I am sure most of you can guess what happened next: hahnium was the name that most American and Western European scientists used whereas nielsbohrium was used in the Soviet Union and Eastern Bloc countries.
The Berkeley team proposed the name hahnium (Ha), in honor of the late German chemist Otto Hahn.
Similar(2)
The American team could not duplicate the Soviet experiment; but, when its members bombarded californium-249 with the nuclei of nitrogen-15 atoms, they produced "hahnium-260," which had a half-life of about 1.6 seconds.
As further evidence of their discovery, the scientists at Berkeley measured the amount of energy emitted by "hahnium-260" as it decayed, as well as the elements produced in the process; these characteristics were quite different from those of previously known elements in the periodic system.
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