Octoctseptium (Oos)

Octoctseptium is the systematic name of the theoretical 887e element in the periodic table with a symbol of Oos and atomic number of 887. Octoctseptium, also known as element 887, has acht­honderd­zeven­en­tachtig protons in its nucleus, and acht­honderd­zeven­en­tachtig electrons in its shells.