Penthexennium (Phe)

Penthexennium is the systematic name of the theoretical 569e element in the periodic table with a symbol of Phe and atomic number of 569. Penthexennium, also known as element 569, has vijf­honderd­negen­en­zestig protons in its nucleus, and vijf­honderd­negen­en­zestig electrons in its shells.