Pentennseptium (Pes)

Pentennseptium is the systematic name of the theoretical 597e element in the periodic table with a symbol of Pes and atomic number of 597. Pentennseptium, also known as element 597, has vijf­honderd­zeven­en­negentig protons in its nucleus, and vijf­honderd­zeven­en­negentig electrons in its shells.