Ennennseptium (Ees)
Ennennseptium is the systematic name of the theoretical ٩٩٧. element in the periodic table with a symbol of Ees and atomic number of 997. Ennennseptium, also known as element 997, has تسعة مائة وسبعة وتسعون protons in its nucleus, and تسعة مائة وسبعة وتسعون electrons in its shells.