Pentseptennium (Pse)

Pentseptennium is the systematic name of the theoretical 579ú element in the periodic table with a symbol of Pse and atomic number of 579. Pentseptennium, also known as element 579, has cúig chéad seachtó a naoi protons in its nucleus, and cúig chéad seachtó a naoi electrons in its shells.