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Ununennium

Chemical element
Ununennium, also known as eka-francium or element 119, is a hypothetical chemical element; it has symbol Uue and atomic number 119. Ununennium and Uue are the temporary systematic IUPAC name and symbol respectively, which are used until the... Wikipedia
Symbol: Uue
Atomic number: 119
Chemical series: Period 8 element
Electron configuration: 8s1 (predicted)
Electrons per shell: 2, 8, 18, 32, 32, 18, 8, 1 (predicted)
Heat of fusion: 2.01–2.05 kJ/mol (extrapolated)
Melting point: 273–303 K (0–30 °C, 32–86 °F) (predicted)