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 osem­sto deväťdesiat­sedem protons in its nucleus, and osem­sto deväťdesiat­sedem electrons in its shells.