Ennennoctium (Eeo)

Ennennoctium is the systematic name of the theoretical thứ 998 element in the periodic table with a symbol of Eeo and atomic number of 998. Ennennoctium, also known as element 998, has chín trăm chín mươi tám protons in its nucleus, and chín trăm chín mươi tám electrons in its shells.