Octseptunium (Osu)

Octseptunium is the systematic name of the theoretical 871. element in the periodic table with a symbol of Osu and atomic number of 871. Octseptunium, also known as element 871, has otte­hundrede og en­og­halvfjerds protons in its nucleus, and otte­hundrede og en­og­halvfjerds electrons in its shells.