Hexquadbium (Hqb)
Hexquadbium is the systematic name of the theoretical ۶۴۲. element in the periodic table with a symbol of Hqb and atomic number of 642. Hexquadbium, also known as element 642, has ششصد و چهل و دو protons in its nucleus, and ششصد و چهل و دو electrons in its shells.