Ennennseptium (Ees)
Ennennseptium is the systematic name of the theoretical 997. element in the periodic table with a symbol of Ees and atomic number of 997. Ennennseptium, also known as element 997, has üheksasada üheksakümmend seitse protons in its nucleus, and üheksasada üheksakümmend seitse electrons in its shells.