List of isotopes

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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

Z
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

Notes

  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


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