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 fënnef­honnert­zweeanvéierzeg protons in its nucleus, and fënnef­honnert­zweeanvéierzeg electrons in its shells.