Pentseptoctium (Pso)

Pentseptoctium is the systematic name of the theoretical 578. element in the periodic table with a symbol of Pso and atomic number of 578. Pentseptoctium, also known as element 578, has fem­hundrede og otte­og­halvfjerds protons in its nucleus, and fem­hundrede og otte­og­halvfjerds electrons in its shells.