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All daughter isotopes (decay products) of element 117 were previously unknown; [73] therefore, their properties could not be used to confirm the claim of discovery. In 2011, when one of the decay products (289 115) was synthesized directly, its properties matched those measured in the claimed indirect synthesis from the decay of element 117. [74]
Clarice Evone Phelps (née Salone) [1] is an American nuclear chemist researching the processing of radioactive transuranic elements at the US Department of Energy's Oak Ridge National Laboratory (ORNL). She was part of ORNL's team that collaborated with the Joint Institute for Nuclear Research to discover tennessine (element 117). [2]
Element 117 was named tennessine because of the participation of Oak Ridge National Laboratory, Vanderbilt University and the University of Tennessee.
[10] [54] Tennessine, element 117 was the latest element claimed to be discovered, in 2009. [55] On 28 November 2016, scientists at the IUPAC officially recognized the names for the four newest elements, with atomic numbers 113, 115, 117, and 118.
This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Development of the table of chemical elements The American chemist Glenn T. Seaborg —after whom the element seaborgium is named—standing in front of a periodic table, May 19, 1950 Part of a series on the Periodic table Periodic table forms 18-column 32-column Alternative and extended ...
The periodic table could soon welcome a new element - it's currently unnamed but known as the super heavy element 117. You might want to sit down - it's time for a science lesson. "It's really ...
Tennessine (117 Ts) is the most-recently synthesized synthetic element, and much of the data is hypothetical. As for any synthetic element, a standard atomic weight cannot be given. Like all synthetic elements, it has no stable isotopes. The first (and so far only) isotopes to be synthesized were 293 Ts and 294 Ts in 2009.
The JWP recognised the JINR–LLNL–ORNL–Vanderbilt collaboration of 2010 as having discovered elements 117 and 115, and accepted that element 113 had been produced as their daughter, but did not give this work shared credit. [67] [70] [83]