Pentsepttrium (Pst)

Pentsepttrium is the systematic name of the theoretical 573e element in the periodic table with a symbol of Pst and atomic number of 573. Pentsepttrium, also known as element 573, has vijf­honderd­drie­ën­zeventig protons in its nucleus, and vijf­honderd­drie­ën­zeventig electrons in its shells.