List of isotopes

A table of chemical elements ordered by atomic number and color coded according to type of element. Given is each element's name, element symbol, atomic mass (or most stable isotope), and in some cases a list of isotopes with their own article.

The name of the element links to an article about isotopes of that element, and the symbol links to the main article about the element.

Template:Element color legend

| Name
| Sym
| Mass (g/mol)
| Selected isotopes

|
|
|
|

1 | Hydrogen | H | 0,000,001 1.00794(7)[1] [2] [3] | Hydrogen-1, Deuterium (Hydrogen-2), Tritium (Hydrogen-3), Hydrogen-4, Hydrogen-5
2 | Helium | He | 0,000,004 4.002602(2)[1] [3] | Diproton (hypothetical Helium-2 nucleus), Helium-3, Helium-4
3 | Lithium | Li | 0,000,006 6.941(2)[1] [2] [3] [4] |
4 | Beryllium | Be | 0,000,009 9.012182(3) |
5 | Boron | B | 0,000,010 10.811(7)[1] [2] [3] |
6 | Carbon | C | 0,000,012 12.0107(8)[1] [3] | Carbon-11, Carbon-12, Carbon-13, Carbon-14
7 | Nitrogen | N | 0,000,014 14.0067(2)[1] [3] | Nitrogen-13, Nitrogen-14, Nitrogen-15
8 | Oxygen | O | 0,000,015 15.9994(3)[1] [3] | Oxygen-18
9 | Fluorine | F | 0,000,018 18.9984032(5) | Fluorine-18
10 | Neon | Ne | 0,000,020 20.1797(6)[1] [2] |
11 | Sodium | Na | 0,000,022 22.98976928(2) |
12 | Magnesium | Mg | 0,000,024 24.3050(6) |
13 | Aluminium | Al | 0,000,026 26.9815386(8) |
14 | Silicon | Si | 0,000,028 28.0855(3)[3] |
15 | Phosphorus | P | 0,000,030 30.973762(2) |
16 | Sulfur | S | 0,000,032 32.065(5)[1] [3] |
17 | Chlorine | Cl | 0,000,035 35.453(2)[1] [2] [3] | Chlorine-36
18 | Argon | Ar | 0,000,039 39.948(1)[1] [3] |
19 | Potassium | K | 0,000,039 39.0983(1) |
20 | Calcium | Ca | 0,000,040 40.078(4)[1] | Calcium-48
21 | Scandium | Sc | 0,000,044 44.955912(6) |
22 | Titanium | Ti | 0,000,047 47.867(1) |
23 | Vanadium | V | 0,000,050 50.9415(1) |
24 | Chromium | Cr | 0,000,051 51.9961(6) |
25 | Manganese | Mn | 0,000,054 54.938045(5) |
26 | Iron | Fe | 0,000,055 55.845(2) | Iron-56
27 | Cobalt | Co | 0,000,058 58.933195(5) | Cobalt-60
28 | Nickel | Ni | 0,000,058 58.6934(2) | Nickel-62
29 | Copper | Cu | 0,000,063 63.546(3)[3] | Copper-64
30 | Zinc | Zn | 0,000,065 65.409(4) |
31 | Gallium | Ga | 0,000,069 69.723(1) |
32 | Germanium | Ge | 0,000,072 72.64(1) |
33 | Arsenic | As | 0,000,074 74.92160(2) |
34 | Selenium | Se | 0,000,078 78.96(3)[3] | Selenium-79
35 | Bromine | Br | 0,000,079 79.904(1) |
36 | Krypton | Kr | 0,000,083 83.798(2)[1] [2] | Krypton-85
37 | Rubidium | Rb | 0,000,085 85.4678(3)[1] |
38 | Strontium | Sr | 0,000,087 87.62(1)[1] [3] | Strontium-90
39 | Yttrium | Y | 0,000,088 88.90585(2) |
40 | Zirconium | Zr | 0,000,091 91.224(2)[1] | Zirconium-93
41 | Niobium | Nb | 0,000,092 92.906 38(2) |
42 | Molybdenum | Mo | 0,000,095 95.94(2)[1] |
43 | Technetium | Tc | 0,000,098 [98.9063][5] | Technetium-99, Technetium-99m
44 | Ruthenium | Ru | 0,000,101 101.07(2)[1] | Ruthenium-106
45 | Rhodium | Rh | 0,000,102 102.90550(2) |
46 | Palladium | Pd | 0,000,106 106.42(1)[1] | Palladium-103, Palladium-107
47 | Silver | Ag | 0,000,107 107.8682(2)[1] |
48 | Cadmium | Cd | 0,000,112 112.411(8)[1] | Cadmium-113m
49 | Indium | In | 0,000,114 114.818(3) |
50 | Tin | Sn | 0,000,118 118.710(7)[1] | Tin-121m, Tin-126
51 | Antimony | Sb | 0,000,121 121.760(1)[1] |
52 | Tellurium | Te | 0,000,127 127.60(3)[1] | Tellurium-124
53 | Iodine | I | 0,000,126 126.90447(3) | Iodine-123, Iodine-124, Iodine-125, Iodine-129, Iodine-131
54 | Xenon | Xe | 0,000,131 131.293(6)[1] [2] | Xenon-133, Xenon-135
55 | Caesium | Cs | 0,000,132 132.9054519(2) | Caesium-134, Caesium-135, Caesium-137
56 | Barium | Ba | 0,000,137 137.327(7) |
57 | Lanthanum | La | 0,000,138 138.90547(7)[1] |
58 | Cerium | Ce | 0,000,140 140.116(1)[1] |
59 | Praseodymium | Pr | 0,000,140 140.90765(2) |
60 | Neodymium | Nd | 0,000,144 144.242(3)[1] |
61 | Promethium | Pm | 0,000,146 [146.9151][5] | Promethium-147
62 | Samarium | Sm | 0,000,150 150.36(2)[1] | Samarium-149, Samarium-151
63 | Europium | Eu | 0,000,151 151.964(1)[1] | Europium-155
64 | Gadolinium | Gd | 0,000,157 157.25(3)[1] |
65 | Terbium | Tb | 0,000,158 158.92535(2) |
66 | Dysprosium | Dy | 0,000,162 162.500(1)[1] |
67 | Holmium | Ho | 0,000,164 164.93032(2) |
68 | Erbium | Er | 0,000,167 167.259(3)[1] |
69 | Thulium | Tm | 0,000,168 168.93421(2) |
70 | Ytterbium | Yb | 0,000,173 173.04(3)[1] |
71 | Lutetium | Lu | 0,000,174 174.967(1)[1] |
72 | Hafnium | Hf | 0,000,178 178.49(2) |
73 | Tantalum | Ta | 0,000,180 180.9479(1) |
74 | Tungsten | W | 0,000,183 183.84(1) |
75 | Rhenium | Re | 0,000,186 186.207(1) |
76 | Osmium | Os | 0,000,190 190.23(3)[1] |
77 | Iridium | Ir | 0,000,192 192.217(3) | Iridium-192
78 | Platinum | Pt | 0,000,195 195.084(9) |
79 | Gold | Au | 0,000,196 196.966569(4) |
80 | Mercury | Hg | 0,000,200 200.59(2) |
81 | Thallium | Tl | 0,000,204 204.3833(2) |
82 | Lead | Pb | 0,000,207 207.2(1)[1] [3] |
83 | Bismuth | Bi | 0,000,208 208.98040(1) | Bismuth-209
84 | Polonium | Po | 0,000,208 [208.9824][5] |
85 | Astatine | At | 0,000,209 [209.9871][5] |
86 | Radon | Rn | 0,000,222 [222.0176][5] |
87 | Francium | Fr | 0,000,223 [223.0197][5] |
88 | Radium | Ra | 0,000,226 [226.0254][5] |
89 | Actinium | Ac | 0,000,227 [227.0278][5] |
90 | Thorium | Th | 0,000,232 232.03806(2)[5] [1] | Thorium-228, Thorium-229, Thorium-230, Thorium-231, Thorium-232, Thorium-234
91 | Protactinium | Pa | 0,000,231 231.03588(2)[5] | Protactinium-230
92 | Uranium | U | 0,000,238 238.02891(3)[5] [1] [2] | Uranium-232, Uranium-233, Uranium-234, Uranium-235, Uranium-236, Uranium-238, Uranium-239, Uranium-240, Uranium-241
93 | Neptunium | Np | 0,000,237 [237.0482][5] | Neptunium-235, Neptunium-236
94 | Plutonium | Pu | 0,000,244 [244.0642][5] | Plutonium-238, Plutonium-239, Plutonium-240, Plutonium-241, Plutonium-244
95 | Americium | Am | 0,000,243 [243.0614][5] | Americium-242, Americium-243
96 | Curium | Cm | 0,000,247 [247.0703][5] |
97 | Berkelium | Bk | 0,000,247 [247.0703][5] |
98 | Californium | Cf | 0,000,251 [251.0796][5] |
99 | Einsteinium | Es | 0,000,252 [252.0829][5] |
100 | Fermium | Fm | 0,000,257 [257.0951][5] |
101 | Mendelevium | Md | 0,000,258 [258.0986][5] |
102 | Nobelium | No | 0,000,259 [259.1009][5] |
103 | Lawrencium | Lr | 0,000,260 [260.1053][5] |
104 | Rutherfordium | Rf | 0,000,261 [261.1087][5] |
105 | Dubnium | Db | 0,000,262 [262.1138][5] |
106 | Seaborgium | Sg | 0,000,263 [263.1182][5] |
107 | Bohrium | Bh | 0,000,262 [262.1229][5] |
108 | Hassium | Hs | 0,000,265 [265][5] |
109 | Meitnerium | Mt | 0,000,266 [266][5] |
110 | Darmstadtium | Ds | 0,000,269 [269][5] |
111 | Roentgenium | Rg | 0,000,272 [272][5] |
112 | Ununbium | Uub | 0,000,285 [285][5] |
113 | Ununtrium | Uut | 0,000,284 [284][5] |
114 | Ununquadium | Uuq | 0,000,289 [289][5] |
115 | Ununpentium | Uup | 0,000,288 [288][5] |
116 | Ununhexium | Uuh | 0,000,292 [292][5] |
117 | Ununseptium | Uus | 0,000,293  [295] [6] |
118 | Ununoctium | Uuo | 0,000,294 [294][5] |

Template:Element color legend

## See also

[edit | edit source]

* Index to isotope pages
* Isotope lists
* Table of nuclides
* Table of nuclides (combined)

## Notes

[edit | edit source]

1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.
2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.
3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.
4. ↑ The atomic weight of commercial Lithium can vary between 6.939 and 6.996--analysis of the specific material is necessary to find a more accurate value.
5. ↑ 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 5.25 5.26 5.27 5.28 5.29 5.30 5.31 5.32 5.33 5.34 5.35 The element does not have any stable nuclides, and a value in brackets, e.g. [209], indicates the mass number of the longest-lived isotope of the element or characteristic isotopic composition.
6. ↑ This element has not been discovered/synthesized.

## References

[edit | edit source]

* Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107-1122, 2003. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers from 1-109 taken from this source.
* IUPAC Standard Atomic Weights Revised (2005).
* WebElements Periodic Table. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers 110-116 taken from this source.

Template:PeriodicTablesFooter