Pentquadtrium (Pqt)
Pentquadtrium is the systematic name of the theoretical ۵۴۳. element in the periodic table with a symbol of Pqt and atomic number of 543. Pentquadtrium, also known as element 543, has پانصد و چهل و سه protons in its nucleus, and پانصد و چهل و سه electrons in its shells.