Octseptseptium (Oss)

Octseptseptium is the systematic name of the theoretical 877e element in the periodic table with a symbol of Oss and atomic number of 877. Octseptseptium, also known as element 877, has acht­honderd­zeven­en­zeventig protons in its nucleus, and acht­honderd­zeven­en­zeventig electrons in its shells.