Pentseptennium (Pse)

Pentseptennium is the systematic name of the theoretical 579. element in the periodic table with a symbol of Pse and atomic number of 579. Pentseptennium, also known as element 579, has fem­hundrede og ni­og­halvfjerds protons in its nucleus, and fem­hundrede og ni­og­halvfjerds electrons in its shells.