1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56BaLa*Lanthanoide57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88RaAc*Actinoide89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og
Relative Atommasse
Standardatomgewicht als dimensionsloses arithmetisches Mittel der relativen Massen aller Isotope eines Elements, gewichtet mit deren Häufigkeit auf der Erde.
Element | Relative Atommasse | ||
---|---|---|---|
1H | Wasserstoff | 1,008 ±2·10-4 [1,007 … 1,008] | |
2He | Helium | 4,002 ±2·10-6 | |
3Li | Lithium | 6,94 ±0,06 [6,938 … 6,997] | |
4Be | Beryllium | 9,012 ±5·10-7 | |
5B | Bor | 10,81 ±0,02 [10,8 … 10,82] | |
6C | Kohlenstoff | 12,01 ±0,002 [12 … 12,01] | |
7N | Stickstoff | 14 ±0,001 [14 … 14] | |
8O | Sauerstoff | 15,99 ±0,001 [15,99 … 15,99] | |
9F | Fluor | 18,99 ±5·10-9 | |
10Ne | Neon | 20,17 ±6·10-4 | |
11Na | Natrium | 22,98 ±2·10-8 | |
12Mg | Magnesium | 24,3 ±0,002 [24,3 … 24,3] | |
13Al | Aluminium | 26,98 ±3·10-7 | |
14Si | Silicium | 28,08 ±0,001 [28,08 … 28,08] | |
15P | Phosphor | 30,97 ±5·10-9 | |
16S | Schwefel | 32,06 ±0,02 [32,05 … 32,07] | |
17Cl | Chlor | 35,45 ±0,01 [35,44 … 35,45] | |
18Ar | Argon | 39,95 ±0,16 [39,79 … 39,96] | |
19K | Kalium | 39,09 ±1·10-4 | |
20Ca | Calcium | 40,07 ±0,004 | |
21Sc | Scandium | 44,95 ±4·10-6 | |
22Ti | Titan | 47,86 ±0,001 | |
23V | Vanadium | 50,94 ±1·10-4 | |
24Cr | Chrom | 51,99 ±6·10-4 | |
25Mn | Mangan | 54,93 ±2·10-6 | |
26Fe | Eisen | 55,84 ±0,002 | |
27Co | Cobalt | 58,93 ±3·10-6 | |
28Ni | Nickel | 58,69 ±4·10-4 | |
29Cu | Kupfer | 63,54 ±0,003 | |
30Zn | Zink | 65,38 ±0,02 | |
31Ga | Gallium | 69,72 ±0,001 | |
32Ge | Germanium | 72,63 ±0,008 | |
33As | Arsen | 74,92 ±6·10-6 | |
34Se | Selen | 78,97 ±0,008 | |
35Br | Brom | 79,9 ±0,003 [79,9 … 79,9] | |
36Kr | Krypton | 83,79 ±0,002 | |
37Rb | Rubidium | 85,46 ±3·10-4 | |
38Sr | Strontium | 87,62 ±0,01 | |
39Y | Yttrium | 88,9 ±2·10-6 | |
40Zr | Zirconium | 91,22 ±0,002 | |
41Nb | Niob | 92,9 ±1·10-5 | |
42Mo | Molybdän | 95,95 ±0,01 | |
44Ru | Ruthenium | 101 ±0,02 | |
45Rh | Rhodium | 102,9 ±2·10-5 | |
46Pd | Palladium | 106,4 ±0,01 | |
47Ag | Silber | 107,8 ±2·10-4 | |
48Cd | Cadmium | 112,4 ±0,004 | |
49In | Indium | 114,8 ±0,001 | |
50Sn | Zinn | 118,7 ±0,007 | |
51Sb | Antimon | 121,7 ±0,001 | |
52Te | Tellur | 127,6 ±0,03 | |
53I | Iod | 126,9 ±3·10-5 | |
54Xe | Xenon | 131,2 ±0,006 | |
55Cs | Caesium | 132,9 ±5,999·10-8 | |
56Ba | Barium | 137,3 ±0,007 | |
57La | Lanthan | 138,9 ±7·10-5 | |
58Ce | Cer | 140,1 ±0,001 | |
59Pr | Praseodym | 140,9 ±1·10-5 | |
60Nd | Neodym | 144,2 ±0,003 | |
62Sm | Samarium | 150,3 ±0,02 | |
63Eu | Europium | 151,9 ±0,001 | |
64Gd | Gadolinium | 157,2 ±0,03 | |
65Tb | Terbium | 158,9 ±7·10-6 | |
66Dy | Dysprosium | 162,5 ±0,001 | |
67Ho | Holmium | 164,9 ±5·10-6 | |
68Er | Erbium | 167,2 ±0,003 | |
69Tm | Thulium | 168,9 ±5·10-6 | |
70Yb | Ytterbium | 173 ±0,01 | |
71Lu | Lutetium | 174,9 ±1·10-4 | |
72Hf | Hafnium | 178,4 ±0,006 | |
73Ta | Tantal | 180,9 ±2·10-5 | |
74W | Wolfram | 183,8 ±0,01 | |
75Re | Rhenium | 186,2 ±0,001 | |
76Os | Osmium | 190,2 ±0,03 | |
77Ir | Iridium | 192,2 ±0,002 | |
78Pt | Platin | 195 ±0,009 | |
79Au | Gold | 196,9 ±4·10-6 | |
80Hg | Quecksilber | 200,5 ±0,003 | |
81Tl | Thallium | 204,3 ±0,01 [204,3 … 204,3] | |
82Pb | Blei | 207,2 ±1,1 [206,1 … 207,9] | |
83Bi | Bismut | 208,9 ±1·10-5 | |
90Th | Thorium | 232 ±4·10-4 | |
91Pa | Protactinium | 231 ±1·10-5 | |
92U | Uran | 238 ±3·10-5 |