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 kaheksasada üheksakümmend seitse protons in its nucleus, and kaheksasada üheksakümmend seitse electrons in its shells.