Periodic table of the isotopes launched by Iupac. 988622_411324012313546_137534184_n.jpg (JPEG obrázek, 500 × 295 bodů) 1098183_418554658257148_711231247_n.jpg (JPEG obrázek, 800 × 600 bodů) QR Code Periodic Table with Symbols. Periodic table of the isotopes launched by Iupac. Periodic table of the isotopes launched by Iupac.