Ununpentium
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| Predicted properties |
| Name, Symbol, Number | Ununpentium, Uup, 115 |
| Chemical series | Presumably poor metals |
| Group, Period, Block | 15, 7 , p |
| Appearance | Unknown, probably a metallic
and silvery white or grey colour |
| Atomic weight | [288] amu (A guess) |
| Electron configuration | [Rn] 5f14 6d10 7s27p3
(A guess based upon bismuth) |
| e- 's per energy level | 2, 8, 18, 32, 32, 18, 5 |
| State of matter | Presumably a solid |
Ununpentium is the temporary name of an unconfirmed synthetic superheavy element in the periodic table that has the temporary symbol Uup and has the atomic number 115.
History
On February 1, 2004, the synthesis of ununpentium and ununtrium were reported in Physical Review C by a team composed of Russian scientists at Dubna University's [1] Joint Institute for Nuclear Research [2], and American scientists at the Lawrence Livermore National Laboratory . Their discovery of the element still awaits confirmation. [3]
The team reported that they bombarded americium (element 95) with calcium (element 20) to produce four atoms of ununpentium (element 115). These atoms, they report, decayed to ununtrium (element 113) in a fraction of a second. The ununtrium produced then existed for 1.2 seconds before decaying into known elements.
The name Ununpentium is used as a placeholder, such as in scientific articles about the search for Element 115; it is a Graeco-Latinate way of saying "one-one-five-ium" ("ium" being a standard ending for element names). Such transuranic elements are always artificially produced, and usually end up being named for a scientist. See Element naming controversy, systematic element name.
External link
A fictional stable isotope of ununpentium occurs in the game Dark Reign.
Referenced By
As of February 2004 | Current Events | Current event | Discoveries of the chemical elements | Discovery of the chemical elements | Electron affinity | Electron orbital | Electronegative | Electronegativity | Element 114 | Element 116 | February 2004 | July 11, 2002 | 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 | Systamic element names | Systematic element name | Transuranic | Transuranic element | Transuranium element | Ununhexium | Ununquadium
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