Ununseptium
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| General | ||||||
|---|---|---|---|---|---|---|
| Name, Symbol, Number | ununseptium, Uus, 117 | |||||
| Chemical series | presumably halogens | |||||
| Group, Period, Block | 17, 7, p | |||||
| Appearance | unknown, probably dark metallic | |||||
| Atomic mass | predicted, (310) g/mol | |||||
| Electron configuration | perhaps [Rn] 5f14 6d10 7s2 7p5 (guess based on astatine) | |||||
| Electrons per shell | 2, 8, 18, 32, 32, 18, 7 | |||||
| Phase | presumably a solid | |||||
| CAS registry number | 87658-56-8 | |||||
| References | ||||||
Ununseptium (IPA: /ˌjuːnʌnˈsɛptiəm/) is the temporary name of an undiscovered chemical element in the periodic table that has the temporary symbol Uus and has the atomic number 117. Ununseptium can be referred to as eka-astatine.
[edit] History
The name ununseptium is used as a placeholder, as in scientific articles about the search for element 117. Transuranic elements (those beyond uranium) are, except for microscopic quantities, always artificially produced, and usually end up being named for a scientist or the location of a laboratory that does work in atomic physics (see systematic element name for more information).
Ununseptium has not yet been discovered. If discovered, it will most likely be a synthetically prepared element, and would have chemical properties similar to the heavier halogens.
[edit] See also
[edit] External links
ast:Ununseptiu ca:Ununsepti cs:Ununseptium co:Ununseptiu de:Ununseptium el:Ununseptium es:Ununseptio eo:Ununseptio fr:Ununseptium ko:우눈셉튬 hr:Ununseptij he:אונונספטיום la:Ununseptium lb:Ununseptium hu:Ununseptium nl:Ununseptium nn:Ununseptium pl:Ununseptium pt:Ununséptio ru:Унунсептий sr:Унунсептијум sh:Ununseptijum fi:Ununseptium sv:Ununseptium th:อูนอูนเซปเทียม uk:Унунсептій zh:Uus
