Hexquadbium (Hqb)
Hexquadbium is the systematic name of the theoretical 642. element in the periodic table with a symbol of Hqb and atomic number of 642. Hexquadbium, also known as element 642, has šeši šimtai keturiasdešimt du protons in its nucleus, and šeši šimtai keturiasdešimt du electrons in its shells.