Pentquadtrium (Pqt)

Pentquadtrium is the systematic name of the theoretical 543ú element in the periodic table with a symbol of Pqt and atomic number of 543. Pentquadtrium, also known as element 543, has cúig chéad daichead a trí protons in its nucleus, and cúig chéad daichead a trí electrons in its shells.