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Unununium
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| Known properties |
| Name, Symbol, Number | Unununium, Uuu, 111 |
| Chemical series | Transition metals |
| Group, Period, Block | 11, 7 , d |
| Appearance | unknown; probably metallic,
silvery white or gray |
| Atomic weight | [272] amu |
| Electron configuration | probably [Rn]5f14 6d10 7s1 |
| e- 's per energy level | 2, 8, 18, 32, 32, 18, 1 |
| State of matter | Presumably a solid |
Unununium 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).
It is named Unununium, as in 1-1-1-ium, a temporary IUPAC systematic element name. There is an ongoing element naming controversy over what this element should be called.
External links
Referenced By
Darmstadtium | Discoveries of the chemical elements | Discovery of the chemical elements | Electron affinity | Electron orbital | Electronegative | Electronegativity | Element 110 | Element 112 | Gesellschaft für Schwerionenforschung | Isotope table (complete) | Isotope table (divided) | List of chemistry topics | Pauling Electronegativity Scale | Period 7 element | Periodic Table | Periodic Table of the Elements | Periodic table/Alternate Table | Periodic table/Electron configurations | Periodic table/Metals and Non Metals | Periodic table/Standard Table | Periodic table/Table only | Periodic table (alternate) | Periodic table (block) | Periodic table (electron configurations) | Periodic table (metals and non-metals) | Periodic table (standard) | Periodic table of elements | Periodic table of the chemical elements | Transuranic | Transuranic element | Transuranium element | Ununbium | Ununnilium | Uuu operating system
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