Hexhextrium (Hht)

Hexhextrium is the systematic name of the theoretical 663. element in the periodic table with a symbol of Hht and atomic number of 663. Hexhextrium, also known as element 663, has šeši šimtai šešiasdešimt trys protons in its nucleus, and šeši šimtai šešiasdešimt trys electrons in its shells.