Pentunennium (Pue)
Pentunennium is the systematic name of the theoretical 519. element in the periodic table with a symbol of Pue and atomic number of 519. Pentunennium, also known as element 519, has pesëqind e nëntëmbëdhjetë protons in its nucleus, and pesëqind e nëntëmbëdhjetë electrons in its shells.