Pentseptunium (Psu)

Pentseptunium is the systematic name of the theoretical 571ú element in the periodic table with a symbol of Psu and atomic number of 571. Pentseptunium, also known as element 571, has cúig chéad seachtó a haon protons in its nucleus, and cúig chéad seachtó a haon electrons in its shells.