Page 41 - Curriculum Visions Dynamic Book

Ununhexium (Uuh)
Element 116. It is one of the most recently discovered elements and very little is so far known about it. Only
a few atoms of element 116 have
ever been made, and they are only a brief product of the decay of element 118 (see ununoctium). Element 118 decays less than a millisecond after its formation to make element 116, which then decays in a similarly short time to element 114 (ununquadium).
Discovery
Ununhexium was discovered in 1999 by V. Ninov, K. E. Gregorich,W. Loveland, A. Ghiorso, D.C. Hoffman, D. M. Lee,
H. Nitsche,W. J. Swiatecki, U.W. Kirbach, C. A. Laue, J. L. Adams, J. B. Patin,
D.A. Shaughnessy, D.A. Strellis and P.A.Wilk at Berkeley, California.
Ununhexium is a temporary name and will be changed when international agreement has been reached.
Technology
So little of it has been produced that it has no uses.
Geology
It does not occur naturally in the environment.
Biology
It does not occur in living things.
Key facts...
Name: ununhexium
Symbol: Uuh
Atomic number: 116
Atomic weight: 289
Position in Periodic Table: group 6 (16)
(oxygen group or chalcogen); period 7 State at room temperature: not known, but
probably a solid
Colour: unknown
Density: n/a
Melting point: n/a
Boiling point: n/a
Origin of name: so far, this element has only
been given a temporary name according to an international scheme of established scientific procedures
Shell pattern of electrons: 2–8–18–32–32–18–6
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