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