Octseptnilium (Osn)

Octseptnilium is the systematic name of the theoretical 870'inci element in the periodic table with a symbol of Osn and atomic number of 870. Octseptnilium, also known as element 870, has səkkiz yüz yetmiş protons in its nucleus, and səkkiz yüz yetmiş electrons in its shells.