Ennennennium (Eee)

Ennennennium is the systematic name of the theoretical ۹۹۹. element in the periodic table with a symbol of Eee and atomic number of 999. Ennennennium, also known as element 999, has نهصد و نود و نه protons in its nucleus, and نهصد و نود و نه electrons in its shells.