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Ununennium (Uue)
Atomic number: 119 · Category: unknown, but predicted to be an alkali metal · Group 1 · Period 8 · Phase: Solid
Ununennium, also known as eka-francium or simply element 119, is the hypothetical chemical element with symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, until a permanent name is decided upon. In the periodic table of the elements, it is expected to be an s-block element, an alkali metal, and the first element in the eighth period.
Block: s
Electronic structure
Electron configuration: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d10 7p6 8s1
Configuration (semantic): *[Uuo] 8s1
Shells: 2, 8, 18, 32, 32, 18, 8, 1
Electron affinity: 63.87
Periodic position
Group: 1
Period: 8
xpos: 1
ypos: 8
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