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