roentgenium – ununbium – ununtrium Hg Uub         Full table
Known properties
Name, Symbol, Number	Ununbium, Uub, 112
Chemical series	Transition metal
Group, Period, Block	12, 7, d
Appearance	Unknown, probably a metallic and silvery white or grey colour.
Atomic weight	[285] amu
Electron configuration	[Rn].5f14 6d10 7s2 a guess based on Mercury
e-s per energy level	2, 8, 18, 32, 32, 18, 2
State of matter	probably liquid

Ununbium (eka-mercury) is a chemical element in the periodic table that has symbol Uub and has the atomic number 112. Element 112 is one of the superheavy elements; its longest-lived isotope has a mass of 285 and a half-life of 11 min. Some research has referred to it as "eka-mercury". Following periodic trends, it is expected to be a liquid metal more volatile than mercury.

History

It was first created on February 9, 1996 at the Gesellschaft für Schwerionenforschung (GSI) in Darmstadt, Germany. This element was created by fusing a zinc atom with a lead atom by accelerating zinc nuclei into a lead target in a heavy ion accelerator.

Ununbium is a temporary IUPAC systematic element name.

External links

• WebElements.com - Ununbium
• Apsidium - Ununbium