Pentennseptium (Pes)

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