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Elements 113, 115, 117, & 118 officially discovered

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gippgig:
www.iupac.org/news/news-detail/article/discovery-and-assignment-of-elements-with-atomic-numbers-113-115-117-and-118.html

gippgig:
IUPAC report on 113, 115, & 117: doi: 10.1515/pac-2015-0502
118: doi: 10.1515/pac-2015-0501

gippgig:
Moscowium proposed for 115:
www.jinr.ru/posts/moscowium-was-offered/

skatebiker:
These elements are imho a kind of fake, as no chemical or physical properties can be determined for just a few atom sized quantities .
Of course, 85At and 87Fr have the same issue but these elements are decay products of elements occurring in nature.

gippgig:
I seem to recall that the theoretical limit for doing chemistry is around 10-14 second. (Note that that would make it possible to study the chemistry of hyperatoms since the lifetime of a lambda hyperon is around 10-10 second, permitting the characterization of the chemistry of elements far beyond the current end of the periodic table.)

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