Octseptoctium (Oso)

Octseptoctium is the systematic name of the theoretical 878'inci element in the periodic table with a symbol of Oso and atomic number of 878. Octseptoctium, also known as element 878, has səkkiz yüz yetmiş səkkiz protons in its nucleus, and səkkiz yüz yetmiş səkkiz electrons in its shells.