Hexsepttrium (Hst)
Hexsepttrium is the systematic name of the theoretical 673वाँ element in the periodic table with a symbol of Hst and atomic number of 673. Hexsepttrium, also known as element 673, has छह सौ तिहत्तर protons in its nucleus, and छह सौ तिहत्तर electrons in its shells.