1H2He3Li4Be5B6C7N8O9F10Ne11Na12Mg13Al14Si15P16S17Cl18Ar19K20Ca21Sc22Ti23V24Cr25Mn26Fe27Co28Ni29Cu30Zn31Ga32Ge33As34Se35Br36Kr37Rb38Sr39Y40Zr41Nb42Mo43Tc44Ru45Rh46Pd47Ag48Cd49In50Sn51Sb52Te53I54Xe55Cs56BaLa*Lanthanoide57La58Ce59Pr60Nd61Pm62Sm63Eu64Gd65Tb66Dy67Ho68Er69Tm70Yb71Lu72Hf73Ta74W75Re76Os77Ir78Pt79Au80Hg81Tl82Pb83Bi84Po85At86Rn87Fr88RaAc*Actinoide89Ac90Th91Pa92U93Np94Pu95Am96Cm97Bk98Cf99Es100Fm101Md102No103Lr104Rf105Db106Sg107Bh108Hs109Mt110Ds111Rg112Cn113Nh114Fl115Mc116Lv117Ts118Og
Atommasse
Masse eines Atomes eines chemischen Elements in u, der atomaren Masseneinheit. Die Atommasse ist aufgrund des Massenverlusts der Bindungsenergie etwas geringer als die Summe der Massen ihrer Protonen, Neutronen und Elektronen.
Element | Atommasse | ||
---|---|---|---|
1H | Wasserstoff | 1,008 u | |
2He | Helium | 4,002 u | |
3Li | Lithium | 6,946 u | |
4Be | Beryllium | 9,012 u | |
5B | Bor | 10,81 u | |
6C | Kohlenstoff | 12,01 u | |
7N | Stickstoff | 14 u | |
8O | Sauerstoff | 15,99 u | |
9F | Fluor | 18,99 u | |
10Ne | Neon | 20,17 u | |
11Na | Natrium | 22,98 u | |
12Mg | Magnesium | 24,3 u | |
13Al | Aluminium | 26,98 u | |
14Si | Silicium | 28,08 u | |
15P | Phosphor | 30,97 u | |
16S | Schwefel | 32,06 u | |
17Cl | Chlor | 35,45 u | |
18Ar | Argon | 39,94 u | |
19K | Kalium | 39,09 u | |
20Ca | Calcium | 40,07 u | |
21Sc | Scandium | 44,95 u | |
22Ti | Titan | 47,86 u | |
23V | Vanadium | 50,94 u | |
24Cr | Chrom | 51,99 u | |
25Mn | Mangan | 54,93 u | |
26Fe | Eisen | 55,84 u | |
27Co | Cobalt | 58,93 u | |
28Ni | Nickel | 58,69 u | |
29Cu | Kupfer | 63,54 u | |
30Zn | Zink | 65,38 u | |
31Ga | Gallium | 69,72 u | |
32Ge | Germanium | 72,63 u | |
33As | Arsen | 74,92 u | |
34Se | Selen | 78,97 u | |
35Br | Brom | 79,9 u | |
36Kr | Krypton | 83,79 u | |
37Rb | Rubidium | 85,46 u | |
38Sr | Strontium | 87,62 u | |
39Y | Yttrium | 88,9 u | |
40Zr | Zirconium | 91,22 u | |
41Nb | Niob | 92,9 u | |
42Mo | Molybdän | 95,95 u | |
43Tc | Technetium | (98,9 u) | |
44Ru | Ruthenium | 101 u | |
45Rh | Rhodium | 102,9 u | |
46Pd | Palladium | 106,4 u | |
47Ag | Silber | 107,8 u | |
48Cd | Cadmium | 112,4 u | |
49In | Indium | 114,8 u | |
50Sn | Zinn | 118,7 u | |
51Sb | Antimon | 121,7 u | |
52Te | Tellur | 127,6 u | |
53I | Iod | 126,9 u | |
54Xe | Xenon | 131,2 u | |
55Cs | Caesium | 132,9 u | |
56Ba | Barium | 137,3 u | |
57La | Lanthan | 138,9 u | |
58Ce | Cer | 140,1 u | |
59Pr | Praseodym | 140,9 u | |
60Nd | Neodym | 144,2 u | |
61Pm | Promethium | 146,9 u | |
62Sm | Samarium | 150,3 u | |
63Eu | Europium | 151,9 u | |
64Gd | Gadolinium | 157,2 u | |
65Tb | Terbium | 158,9 u | |
66Dy | Dysprosium | 162,5 u | |
67Ho | Holmium | 164,9 u | |
68Er | Erbium | 167,2 u | |
69Tm | Thulium | 168,9 u | |
70Yb | Ytterbium | 173 u | |
71Lu | Lutetium | 174,9 u | |
72Hf | Hafnium | 178,4 u | |
73Ta | Tantal | 180,9 u | |
74W | Wolfram | 183,8 u | |
75Re | Rhenium | 186,2 u | |
76Os | Osmium | 190,2 u | |
77Ir | Iridium | 192,2 u | |
78Pt | Platin | 195 u | |
79Au | Gold | 196,9 u | |
80Hg | Quecksilber | 200,5 u | |
81Tl | Thallium | 204,3 u | |
82Pb | Blei | 207,2 u | |
83Bi | Bismut | 208,9 u | |
84Po | Polonium | (209,9 u) | |
85At | Astat | (209,9 u) | |
86Rn | Radon | (222 u) | |
87Fr | Francium | (223 u) | |
88Ra | Radium | (226 u) | |
89Ac | Actinium | (227 u) | |
90Th | Thorium | 232 u | |
91Pa | Protactinium | 231 u | |
92U | Uran | 238 u | |
93Np | Neptunium | (237 u) | |
94Pu | Plutonium | (244 u) | |
95Am | Americium | (243 u) | |
96Cm | Curium | (247 u) | |
97Bk | Berkelium | (247 u) | |
98Cf | Californium | (251 u) | |
99Es | Einsteinium | (252 u) | |
100Fm | Fermium | (257 u) | |
101Md | Mendelevium | (258 u) | |
102No | Nobelium | (259 u) | |
103Lr | Lawrencium | (266 u) | |
104Rf | Rutherfordium | (261,1 u) | |
105Db | Dubnium | (262,1 u) | |
106Sg | Seaborgium | (263,1 u) | |
107Bh | Bohrium | (262,1 u) | |
108Hs | Hassium | (265,2 u) | |
109Mt | Meitnerium | (268 u) | |
110Ds | Darmstadtium | (281 u) | |
111Rg | Roentgenium | (280 u) | |
112Cn | Copernicium | (277 u) | |
113Nh | Nihonium | (287 u) | |
114Fl | Flerovium | (289 u) | |
115Mc | Moscovium | (288 u) | |
116Lv | Livermorium | (293 u) | |
117Ts | Tenness | (292 u) | |
118Og | Oganesson | (294 u) |