Ennennseptium (Ees)

Ennennseptium is the systematic name of the theoretical 997a element in the periodic table with a symbol of Ees and atomic number of 997. Ennennseptium, also known as element 997, has nouă sute nouăzeci şi şapte protons in its nucleus, and nouă sute nouăzeci şi şapte electrons in its shells.