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Unununium - Ununbium - Ununtrium

Full table
Known properties
Name, Symbol, NumberUnunbium, Uub, 112
Series Transition metal
Group, Period, Block12, 7 , d
Appearance Unknown, probably a metallic
and silvery white or grey colour.
Atomic weight [277] amu
Electron configuration [Rn].5f14 6d10 7s2
a guess based on Mercury
e- 's per energy level2, 8, 18, 32, 32, 18, 2
State of matter probably liquid
Ununbium 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 and its atoms decompose through the emission of alpha particles with a half life of only about 240 µs.


It was first created on the 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.

It is named Ununbium, as in 1-1-2-ium, a temporary IUPAC systematic element name. There is an ongoing element naming controversy over what this element should be called.

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