Pentseptennium (Pse)

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