Octseptunium (Osu)

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