Hexsepttrium (Hst)

Hexsepttrium is the systematic name of the theoretical 673. element in the periodic table with a symbol of Hst and atomic number of 673. Hexsepttrium, also known as element 673, has seks­hundrede og tre­og­halvfjerds protons in its nucleus, and seks­hundrede og tre­og­halvfjerds electrons in its shells.