Periodensystem der Elemente

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    Atomic Symbol Name Gewicht
    1
  1. 1 H Wasserstoff 1,008
  2. 2 He Helium 4,0026
  3. 2
  4. 3 Li Lithium 6,94
  5. 4 Be Beryllium 9,0122
  6. 5 B Bor 10,81
  7. 6 C Kohlenstoff 12,011
  8. 7 N Stickstoff 14,007
  9. 8 O Sauerstoff 15,999
  10. 9 F Fluor 18,998
  11. 10 Ne Neon 20,180
  12. 3
  13. 11 Na Natrium 22,990
  14. 12 Mg Magnesium 24,305
  15. 13 Al Aluminium 26,982
  16. 14 Si Silicium 28,085
  17. 15 P Phosphor 30,974
  18. 16 S Schwefel 32,06
  19. 17 Cl Chlor 35,45
  20. 18 Ar Argon 39,948
  21. 4
  22. 19 K Kalium 39,098
  23. 20 Ca Calcium 40,078
  24. 21 Sc Scandium 44,956
  25. 22 Ti Titan 47,867
  26. 23 V Vanadium 50,942
  27. 24 Cr Chrom 51,996
  28. 25 Mn Mangan 54,938
  29. 26 Fe Eisen 55,845
  30. 27 Co Cobalt 58,933
  31. 28 Ni Nickel 58,693
  32. 29 Cu Kupfer 63,546
  33. 30 Zn Zink 65,38
  34. 31 Ga Gallium 69,723
  35. 32 Ge Germanium 72,630
  36. 33 As Arsen 74,922
  37. 34 Se Selen 78,971
  38. 35 Br Brom 79,904
  39. 36 Kr Krypton 83,798
  40. 5
  41. 37 Rb Rubidium 85,468
  42. 38 Sr Strontium 87,62
  43. 39 Y Yttrium 88,906
  44. 40 Zr Zirconium 91,224
  45. 41 Nb Niob 92,906
  46. 42 Mo Molybdän 95,95
  47. 43 Tc Technetium (98)
  48. 44 Ru Ruthenium 101,07
  49. 45 Rh Rhodium 102,91
  50. 46 Pd Palladium 106,42
  51. 47 Ag Silber 107,87
  52. 48 Cd Cadmium 112,41
  53. 49 In Indium 114,82
  54. 50 Sn Zinn 118,71
  55. 51 Sb Antimon 121,76
  56. 52 Te Tellur 127,60
  57. 53 I Iod 126,90
  58. 54 Xe Xenon 131,29
  59. 6
  60. 55 Cs Caesium 132,91
  61. 56 Ba Barium 137,33
  62. 57–71
    6
  63. 57 La Lanthan 138,91
  64. 58 Ce Cer 140,12
  65. 59 Pr Praseodym 140,91
  66. 60 Nd Neodym 144,24
  67. 61 Pm Promethium (145)
  68. 62 Sm Samarium 150,36
  69. 63 Eu Europium 151,96
  70. 64 Gd Gadolinium 157,25
  71. 65 Tb Terbium 158,93
  72. 66 Dy Dysprosium 162,50
  73. 67 Ho Holmium 164,93
  74. 68 Er Erbium 167,26
  75. 69 Tm Thulium 168,93
  76. 70 Yb Ytterbium 173,05
  77. 71 Lu Lutetium 174,97
  78. 72 Hf Hafnium 178,49
  79. 73 Ta Tantal 180,95
  80. 74 W Wolfram 183,84
  81. 75 Re Rhenium 186,21
  82. 76 Os Osmium 190,23
  83. 77 Ir Iridium 192,22
  84. 78 Pt Platin 195,08
  85. 79 Au Gold 196,97
  86. 80 Hg Quecksilber 200,59
  87. 81 Tl Thallium 204,38
  88. 82 Pb Blei 207,2
  89. 83 Bi Bismut 208,98
  90. 84 Po Polonium (209)
  91. 85 At Astat (210)
  92. 86 Rn Radon (222)
  93. 7
  94. 87 Fr Francium (223)
  95. 88 Ra Radium (226)
  96. 89–103
    7
  97. 89 Ac Actinium (227)
  98. 90 Th Thorium 232,04
  99. 91 Pa Protactinium 231,04
  100. 92 U Uran 238,03
  101. 93 Np Neptunium (237)
  102. 94 Pu Plutonium (244)
  103. 95 Am Americium (243)
  104. 96 Cm Curium (247)
  105. 97 Bk Berkelium (247)
  106. 98 Cf Californium (251)
  107. 99 Es Einsteinium (252)
  108. 100 Fm Fermium (257)
  109. 101 Md Mendelevium (258)
  110. 102 No Nobelium (259)
  111. 103 Lr Lawrencium (266)
  112. 104 Rf Rutherfordium (267)
  113. 105 Db Dubnium (268)
  114. 106 Sg Seaborgium (269)
  115. 107 Bh Bohrium (270)
  116. 108 Hs Hassium (277)
  117. 109 Mt Meitnerium (278)
  118. 110 Ds Darmstadtium (281)
  119. 111 Rg Roentgenium (282)
  120. 112 Cn Copernicium (285)
  121. 113 Nh Nihonium (286)
  122. 114 Fl Flerovium (289)
  123. 115 Mc Moscovium (290)
  124. 116 Lv Livermorium (293)
  125. 117 Ts Tenness (294)
  126. 118 Og Oganesson (294)
  127. Für Elemente, die keine stabilen Isotope aufweisen, ist die Massenzahl des Isotops mit der höchsten Halbwertszeit angegeben.