Unbiseptium

properties
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Properties (if known)
Name , symbol , atomic number	Unbiseptium, Ubs, 127
Element category	Superactinoids
Group , period , block	g7 , 8 , g
CAS number	63309-49-9
Atomic
Atomic mass	(calculated) 336 u
Electron configuration	[ Og ] 5 g 7 8 s 2 (?)
Electrons per energy level	2, 8, 18, 32, 39, 18, 8, 2
Physical state	presumably solid
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Values ​​that are particularly questionable are marked with (?)

Unbiseptium is a currently hypothetical chemical element with the atomic number 127. In 1978 there was an unsuccessful attempt at the synthesis at the Darmstadt UNILAC by bombarding tantalum with xenon ions:

${\displaystyle \,_{\ 73}^{nat}\mathrm {Ta} +\,_{\ 54}^{136}\mathrm {Xe} \to \,^{316,317}\mathrm {Ubs} ^{*}\to \ keine\ Atome}$

In the periodic table it is between ₁₂₆ Unbihexium and ₁₂₈ Unbioctium .

Since there are no natural isotopes of this element , it would have to be generated (synthesized) in an artificial way through nuclear reactions . The name is preliminary and is derived from the ordinal number. Unbiseptium is possibly the seventh element to have a g orbital , which would fill the fifth shell with seven additional electrons . In the extended periodic table it belongs to the transactinoids ( it is not shown in the "normal" periodic table ).

Web links

Wiktionary: Unbiseptium  - explanations of meanings, word origins , synonyms, translations

Individual evidence

1. ^ John Emsley: Nature's Building Blocks: An AZ Guide to the Elements , New. Edition, Oxford University Press, New York, NY 2011, ISBN 978-0-19-960563-7 , p. 593.