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 kuusisataaseitsemänkymmentäkolme protons in its nucleus, and kuusisataaseitsemänkymmentäkolme electrons in its shells.