Unbinilium

ununennium - unbinilium - unbiunium
Ra
Ubn
   
 
 

Image:-TableImage.png
Predicted properties
Name, Symbol, NumberUnbinilium, Ubn, 120
Chemical seriesPresumably Alkali earths
Group, Period, Block2, 8, s
Appearance unknown, probably metallic
and silvery white or grey colour
Atomic weight [297] amu (a guess)
Electron configuration Uuo 8s2
(a guess based upon barium
and radium)
e- 's per energy level2, 8, 18, 32, 32, 18, 8, 2
State of matter presumably a solid

Unbinilium (eka-radium) is the temporary name of an undiscovered chemical element in the periodic table that has the temporary symbol Ubn and has the atomic number 120.

History

The name unbinilium is used as a placeholder, such as in scientific articles about the search for element 120. Transuranic elements beyond plutonium are always artificially produced, and usually end up being named for a scientist or the location of a laboratory that does work in atomic physics.

The element is of interest because it is part of the hypothesized island of stability, with isotope 304 being the most stable.

See systematic element name.

External links

ja:未発見元素の一覧

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