ununennium - unbinilium - unbiunium Ra Ubn         Full table
Predicted properties
Name, Symbol, Number	Unbinilium, Ubn, 120
Chemical series	Presumably Alkali earths
Group, Period, Block	2, 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 level	2, 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

• WebElements.com - Unbinilium
• Apsidium - Unbinilium