Octseptoctium (Oso)

Octseptoctium is the systematic name of the theoretical 878:e element in the periodic table with a symbol of Oso and atomic number of 878. Octseptoctium, also known as element 878, has åtta­hundra­sjuttio­åtta protons in its nucleus, and åtta­hundra­sjuttio­åtta electrons in its shells.