Ununennium

ununennium - unbinilium Fr Uue         Full table
Predicted properties
Name, Symbol, Number	Ununennium, Uue, 119
Chemical series	Presumably Alkali metals
Group, Period, Block	1, 8, s
Appearance	unknown, probably metallic and silvery white or grey colour
Atomic weight	[295] amu(a guess)
Electron configuration	[Uuo] 8s1 (a guess based upon caesium and francium)
e- 's per energy level	2, 8, 18, 32, 32, 18, 8, 1
State of matter	presumably a liquid

Ununennium (eka-francium) is the temporary name of an undiscovered chemical element in the periodic table that has the temporary symbol Uue and has the atomic number 119. It would most likely be extremely reactive with water. Interestingly, it would be the first radioactive liquid (if guesses are right) to be discovered. There are radioactive solids, and radon is a gas but there are no liquids. It would also be only the second liquid metal (the other being mercury).

History

The name ununennium is used as a placeholder, such as in scientific articles about the search for element 119. Such transuranic elements are always artificially produced, and usually end up being named for a scientist.

See systematic element name.

External links

• WebElements.com - Ununennium
• Apsidium - Ununennium