Ennennennium (Eee)

Ennennennium is the systematic name of the theoretical 999e element in the periodic table with a symbol of Eee and atomic number of 999. Ennennennium, also known as element 999, has neuf cent quatre-vingt-dix-neuf protons in its nucleus, and neuf cent quatre-vingt-dix-neuf electrons in its shells.