Pentquadbium (Pqb)

Pentquadbium is the systematic name of the theoretical 542. element in the periodic table with a symbol of Pqb and atomic number of 542. Pentquadbium, also known as element 542, has fimm­hundrað­og­fýrati­tveir protons in its nucleus, and fimm­hundrað­og­fýrati­tveir electrons in its shells.