Octseptennium (Ose)

Octseptennium is the systematic name of the theoretical 879. element in the periodic table with a symbol of Ose and atomic number of 879. Octseptennium, also known as element 879, has otte­hundrede og ni­og­halvfjerds protons in its nucleus, and otte­hundrede og ni­og­halvfjerds electrons in its shells.