Ennennoctium (Eeo)
Ennennoctium is the systematic name of the theoretical ۹۹۸. element in the periodic table with a symbol of Eeo and atomic number of 998. Ennennoctium, also known as element 998, has نهصد و نود و هشت protons in its nucleus, and نهصد و نود و هشت electrons in its shells.