2. Element: Wasserstoff Lithium Natrium Kalium Rubidium Caesium Francium Beryllium Magnesium Calcium Strontium Barium Radium Bor Aluminium Gallium Indium Thallium Ununtrium Kohlenstoff Silicium Germanium Zinn Blei Flevorium Stickstoff Phospor Arsen Antimon Bismut Ununpentium Sauerstoff Schwefel Selen Tellur Polonium Livermorium Flour Chlor Brom Iod Astat Ununseptium Helium Neon Argon Krypton Xenon Radon Ununoctium Cer Praseodym Neodym Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Thorium Protactinium Uran Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Scandium Yttrium Lanthan Actinium Titan Zirconium Hafnium Rutherfordium Vanadium Niob Tantal Dubnium Chrom Molybdän Wolfram Seaborgium Mangan Technetium Rhenium Bohrium Eisen Ruthenium Osmium Hassium Cobalt Rhodium Iridium Meitnerium Nickel Palladium Platin Darmstadtium Kupfer Silber Gold Roentgenium Zink Cadmium Quecksilber Copernicium