Pentseptunium (Psu)

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