Hexseptennium (Hse)

Hexseptennium is the systematic name of the theoretical 679e element in the periodic table with a symbol of Hse and atomic number of 679. Hexseptennium, also known as element 679, has zes­honderd­negen­en­zeventig protons in its nucleus, and zes­honderd­negen­en­zeventig electrons in its shells.