Octennseptium (Oes)

Octennseptium is the systematic name of the theoretical 897. element in the periodic table with a symbol of Oes and atomic number of 897. Octennseptium, also known as element 897, has otte­hundrede og syv­og­halvfems protons in its nucleus, and otte­hundrede og syv­og­halvfems electrons in its shells.