ununquadium

colspan="2" align=center bgcolor="#ffc0c0"\|Known properties
rowspan=3 valign=center\|Pb Uuq	colspan=2 align=center\|ununtrium - ununquadium - ununpentium
align=center\| Full table	}
a href="/encyclopedia/List-of-elements-by-name" title="List of elements by name">Name, Symbol, Number	Ununquadium, Uuq, 114
a href="/encyclopedia/Chemical-series" title="Chemical series">Chemical series	Presumably poor metals
a href="/encyclopedia/periodic-table-group" title="periodic table group">Group, Period, Block	14, 7, p
a href="/encyclopedia/color" title="color">Appearance	Unknown, probably a metallic and silvery white or grey colour
a href="/encyclopedia/Atomic-weight" title="Atomic weight">Atomic weight	289 amu
upposed half-life	30 seconds
a href="/encyclopedia/Electron-configuration" title="Electron configuration">Electron configuration	[Rn] 5f¹⁴ 6d¹⁰ 7s²7p² (a guess based upon radon)
a href="/encyclopedia/electron" title="electron">e^-s per energy level	2, 8, 18, 32, 32, 18, 4
a href="/encyclopedia/State-of-matter" title="State of matter">State of matter	presumably a solid

Ununquadium (eka-lead) is the temporary name of a radioactive chemical element in the periodic table that has the temporary symbol Uuq and has the atomic number 114. Ununquadium does not occur naturally.

History

In January 1999, ununquadium was reported informally by scientists at Dubna (Joint Institute for Nuclear Research) in Russia. They apparently used isotopes that came from the Lawrence Livermore National Laboratory, USA. The same team produced another isotope of Uuq three months later. Since then, no one has seriously challenged the finding. Ununquadium is a temporary IUPAC systematic element name. Some have termed it 'eka-lead', as its properties are conjectured to be similar to those of lead.

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