Unununium Details, Meaning Unununium Article and Explanation Guide

Unununium Guide, Meaning , Facts, Information and Description

darmstadtium - unununium - ununbium
Au Uuu	Full table

Known properties

Name, Symbol, Number

unununium, Uuu, 111

Chemical series

Transition metals

Group, Period, Block

11, 7 , d

unknown; probably metallic,
silvery white or gray

Electron configuration

probably [Rn]55 f¹⁴ 6d¹⁰ 7s¹

e^- 's per energy level

2, 8, 18, 32, 32, 18, 1

State of matter

Presumably a solid

Unununium (proposed name: roentgenium) is a chemical element in the periodic table that has the symbol Uuu and atomic number 111. It has an atomic weight of 272 making it one of the super-heavy atoms. It is a synthetic element whose only known isotope has a half-life of around 15 ms before it decays into meitnerium. Due to its presence in Group 11 it is a transition metal and so probably metallic and solid.

History

It was first created at the Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany on December 8, 1994. Only three atoms of it have been created (all Uuu-272), by the fusion of bismuth-209 and nickel-64 in a linear accelerator. (Nickel was bombarded onto the target.)

Unununium is a temporary IUPAC systematic element name. The name roentgenium has been proposed as a permanent name.

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