Hexquadtrium (Hqt)

Hexquadtrium is the systematic name of the theoretical 643ú element in the periodic table with a symbol of Hqt and atomic number of 643. Hexquadtrium, also known as element 643, has sé chéad daichead a trí protons in its nucleus, and sé chéad daichead a trí electrons in its shells.