Octseptoctium (Oso)
Octseptoctium is the systematic name of the theoretical 878ste element in the periodic table with a symbol of Oso and atomic number of 878. Octseptoctium, also known as element 878, has agthonderd agt-en-sewentig protons in its nucleus, and agthonderd agt-en-sewentig electrons in its shells.