Informationen in deutsch Information in English Информация на русском языке	Atoms in Spec Line A, AM, AMS The ionisation states are given in spectroscopic notation: ‘I’ denotes neutrals, ‘II’ single ionised elements, ‘III’ double ionised elements, etc. Z Element Symbol Ionisation state Z Element Symbol Ionisation state 1 Hydrogen H, D, T I 51 Antimony Sb I - V 2 Helium He I-II 52 Tellurium Te I - II 3 Lithium Li I - III 53 Iodine I I - V 4 Beryllium Be I - IV 54 Xenon Xe I - VIII 5 Boron B I - V 55 Caesium Cs I - IV 6 Carbon C I - V 56 Barium Ba I - V 7 Nitrogen N I - VII 57 Lanthanum La I - V 8 Oxygen O I - VII 58 Cerium Ce I - V 9 Fluorine F I - VIII 59 Praseodymium Pr I - V 10 Neon Ne I - IX 60 Neodymium Nd I - II 11 Sodium Na I - IX 61 Promethium Pm I - II 12 Magnesium Mg I - XII 62 Samarium Sm I - II 13 Aluminium Al I - XIII 63 Europium Eu I - III 14 Silicon Si I - XII 64 Gadolinium Gd I - IV 15 Phosphorus P I - XIII 65 Terbium Tb I - IV 16 Sulphur S I - XVI 66 Dysprosium Dy I - II 17 Chlorine Cl I - X 67 Holmium Ho I - II 18 Argon Ar I - XIV 68 Erbium Er I - III 19 Potassium K I - XIV 69 Thulium Tm I - III 20 Calcium Ca I - XV 70 Ytterbium Yb I - IV 21 Scandium Sc I - XXI 71 Lutetium Lu I - V 22 Titanium Ti I - XXI 72 Hafnium Hf I - V 23 Vanadium V I - XXII 73 Tantalum Ta I - V 24 Chromium Cr I - XXIII 74 Tungsten W I - II 25 Manganese Mn I - XXIV 75 Rhenium Re I - II 26 Iron Fe I - XXV 76 Osmium Os I - II 27 Cobalt Co I - XXVI 77 Iridium Ir I - II 28 Nickel Ni I - XXVII 78 Platinum Pt I - II 29 Copper Cu I - V 79 Gold Au I - III 30 Zinc Zn I - IV 80 Mercury Hg I - III 31 Gallium Ga I - V 81 Thallium Tl I - IV 32 Germanium Ge I - V 82 Lead Pb I - V 33 Arsenic As I - V 83 Bismuth Bi I - V 34 Selenium Se I - V 84 Polonium Po I 35 Bromine Br I - V 85 Astatine At I 36 Krypton Kr I - VIII 86 Radon Rn I 37 Rubidium Rb I - IV 87 Francium Fr I 38 Strontium Sr I - V 88 Radium Ra I - II 39 Yttrium Y I - V 89 Actinium Ac I - IV 40 Zirconium Zr I - V 90 Thorium Th I - IV 41 Niob Nb I - V 91 Protactinium Pa I - II 42 Molybdenum Mo I - IV 92 Uranium U I - II 43 Technetium Tc I - II 93 Neptunium Np I 44 Ruthenium Ru I - III 94 Plutonium Pu I - II 45 Rhodium Rh I - III 95 Americium Am I - II 46 Palladium Pd I - III 96 Curium Cm I - II 47 Silver Ag I - III 97 Berkelium Bk I - II 48 Cadmium Cd I - IV 98 Californium Cf I - II 49 Indium In I - V 99 Einsteinium Es I - II 50 Tin Sn I - V