Octennseptium (Oes)
Octennseptium is the systematic name of the theoretical ke-897 element in the periodic table with a symbol of Oes and atomic number of 897. Octennseptium, also known as element 897, has delapan ratus sembilan puluh tujuh protons in its nucleus, and delapan ratus sembilan puluh tujuh electrons in its shells.