Element Nobelium, No

A group of scientist from the Nobel Institute of Physics, Sweden, reported the isolation of new trans-uranium element 102 in 1957 which had been obtained after bombarding Curium-244 by accelerated Carbon-13 ions. The element emits alpha-particles with half-life 97 seconds and mass number 253. It was suggested to name the element after the institute in which the research was carried out. However Swedish scientists were not able to prove their report. Subsequently Albert Ghiorso and Glenn T. Seaborg efforts to repeat the experiment failed. They reported about synthesizing the isotope of the element 102 with mass number 254 and half-life around 3 sec after Curium-246 bombardment by Carbon-12 and Carbon-13 ions, however they could not identify the element chemically.