Pentennennium (Pee)

Pentennennium is the systematic name of the theoretical 599. element in the periodic table with a symbol of Pee and atomic number of 599. Pentennennium, also known as element 599, has päť­sto deväťdesiat­deväť protons in its nucleus, and päť­sto deväťdesiat­deväť electrons in its shells.