Pentbinilium (Pbn)

Pentbinilium is the systematic name of the theoretical 520. element in the periodic table with a symbol of Pbn and atomic number of 520. Pentbinilium, also known as element 520, has fimm­hundrað­og­tjúgo protons in its nucleus, and fimm­hundrað­og­tjúgo electrons in its shells.