Ennennennium (Eee)

Ennennennium is the systematic name of the theoretical ٩٩٩. element in the periodic table with a symbol of Eee and atomic number of 999. Ennennennium, also known as element 999, has تسعة مائة وتسعة وتسعون protons in its nucleus, and تسعة مائة وتسعة وتسعون electrons in its shells.