Octseptseptium (Oss)

Octseptseptium is the systematic name of the theoretical 877'inci element in the periodic table with a symbol of Oss and atomic number of 877. Octseptseptium, also known as element 877, has səkkiz yüz yetmiş yeddi protons in its nucleus, and səkkiz yüz yetmiş yeddi electrons in its shells.