List of Elements By Stability of Isotopes - Tables

Tables

The following tables give the elements with primordial nuclides, which means the element may still be identified on Earth from natural sources, having been present since the Earth was formed out of the solar nebula. Thus, none are shorter-lived daughters of longer-lived parental primordials, such as radon.

The tables of elements are sorted in order of decreasing number of nuclides associated with each element. (For a list sorted entirely in terms of half-lives of nuclides, with mixing of elements, see List of nuclides.) Stable and unstable (marked decays) nuclides are given, with symbols for unstable (radioactive) nuclides in italics. Note that the sorting does not quite give the elements purely in order of stable nuclides, since some elements have a larger number of long-lived unstable nuclides, which place them ahead of elements with a larger number of stable nuclides. By convention, nuclides are counted as "stable" if they have never been observed to decay by experiment or from observation of decay products (extremely long lived nuclides unstable only in theory, such as tantalum-180m, are counted as stable).

The first table is for even-atomic numbered elements, which tend to have far more primordial nuclides, due to stability conferred by proton-proton pairing. A second separate table is given for odd-atomic numbered elements, which tend to have far fewer stable and long-lived (primordial) unstable nuclides.

Primordial isotopes (in order of decreasing abundance on Earth) of even-Z elements
Z
 Element
50 tin 10 — 120Sn 118Sn 116Sn 119Sn 117Sn 124Sn 122Sn 112Sn 114Sn 115Sn
54 xenon 8 1 132Xe 129Xe 131Xe 134Xe 136Xe 130Xe 128Xe 124Xe 126Xe
48 cadmium 6 2 114Cd 112Cd 111Cd 110Cd 113Cd 116Cd 106Cd 108Cd
52 tellurium 5 3 130Te 128Te 126Te 125Te 124Te 122Te 123Te 120Te
62 samarium 5 3 152Sm 154Sm 147Sm 149Sm 148Sm 150Sm 144Sm 146Sm
44 ruthenium 7 — 102Ru 104Ru 101Ru 99Ru 100Ru 96Ru 98Ru
66 dysprosium 7 — 164Dy 162Dy 163Dy 161Dy 160Dy 158Dy 156Dy
70 ytterbium 7 — 174Yb 172Yb 173Yb 171Yb 176Yb 170Yb 168Yb
80 mercury 7 — 202Hg 200Hg 199Hg 201Hg 198Hg 204Hg 196Hg
42 6 1 98Mo 96Mo 95Mo 92Mo 100Mo 97Mo 94Mo
56 barium 6 1 138Ba 137Ba 136Ba 135Ba 134Ba 132Ba 130Ba
64 gadolinium 6 1 158Gd 160Gd 156Gd 157Gd 155Gd 154Gd 152Gd
76 osmium 6 1 192Os 190Os 189Os 188Os 187Os 186Os 184Os
60 neodymium 5 2 142Nd 144Nd 146Nd 143Nd 145Nd 148Nd 150Nd
36 krypton 6 — 84Kr 86Kr 82Kr 83Kr 80Kr 78Kr
46 palladium 6 — 106Pd 108Pd 105Pd 110Pd 104Pd 102Pd
68 erbium 6 — 166Er 168Er 167Er 170Er 164Er 162Er
20 calcium 5 1 40Ca 44Ca 42Ca 48Ca 43Ca 46Ca
34 selenium 5 1 80Se 78Se 76Se 82Se 77Se 74Se
72 hafnium 5 1 180Hf 178Hf 177Hf 179Hf 176Hf 174Hf
78 platinum 5 1 195Pt 194Pt 196Pt 198Pt 192Pt 190Pt
22 titanium 5 — 48Ti 46Ti 47Ti 49Ti 50Ti
28 nickel 5 — 58Ni 60Ni 62Ni 61Ni 64Ni
30 zinc 5 — 64Zn 66Zn 68Zn 67Zn 70Zn
32 germanium 4 1 74Ge 72Ge 70Ge 73Ge 76Ge
40 zirconium 4 1 90Zr 94Zr 92Zr 91Zr 96Zr
74 tungsten 4 1 184W 186W 182W 183W 180W
16 sulfur 4 — 32S 34S 33S 36S
24 chromium 4 — 52Cr 53Cr 50Cr 54Cr
26 iron 4 — 56Fe 54Fe 57Fe 58Fe
38 strontium 4 — 88Sr 86Sr 87Sr 84Sr
58 cerium 4 — 140Ce 142Ce 138Ce 136Ce
82 lead 4 — 208Pb 206Pb 207Pb 204Pb
8 oxygen 3 — 16O 18O 17O
10 neon 3 — 20Ne 22Ne 21Ne
12 magnesium 3 — 24Mg 26Mg 25Mg
14 silicon 3 — 28Si 29Si 30Si
18 argon 3 — 40Ar 36Ar 38Ar
2 helium 2 — 4He 3He
6 carbon 2 — 12C 13C
92 uranium 0 2 238U 235U
4 beryllium 1 — 9Be
90 thorium 0 1 232Th
94 plutonium 0 1 244Pu
Primordial isotopes of odd-Z elements
Z
 Element
19 potassium 2 1 39K 41K 40K
1 hydrogen 2 — 1H 2H
3 lithium 2 — 7Li 6Li
5 boron 2 — 11B 10B
7 nitrogen 2 — 14N 15N
17 chlorine 2 — 35Cl 37Cl
29 copper 2 — 63Cu 65Cu
31 gallium 2 — 69Ga 71Ga
35 bromine 2 — 79Br 81Br
47 silver 2 — 107Ag 109Ag
51 antimony 2 — 121Sb 123Sb
73 tantalum 2 — 181Ta
77 iridium 2 — 193Ir 191Ir
81 thallium 2 — 205Tl 203Tl
23 vanadium 1 1 51V 50V
37 rubidium 1 1 85Rb 87Rb
49 indium 1 1 115In 113In
57 lanthanum 1 1 139La 138La
63 europium 1 1 153Eu 151Eu
71 lutetium 1 1 175Lu 176Lu
75 rhenium 1 1 187Re 185Re
9 fluorine 1 — 19F
11 sodium 1 — 23Na
13 aluminium 1 — 27Al
15 phosphorus 1 — 31P
21 scandium 1 — 45Sc
25 manganese 1 — 55Mn
27 cobalt 1 — 59Co
33 arsenic 1 — 75As
39 yttrium 1 — 89Y
41 niobium 1 — 93Nb
45 rhodium 1 — 103Rh
53 iodine 1 — 127I
55 caesium 1 — 133Cs
59 1 — 141Pr
65 terbium 1 — 159Tb
67 holmium 1 — 165Ho
69 thulium 1 — 169Tm
79 gold 1 — 197Au
83 bismuth 0 1 209Bi

Read more about this topic:  List Of Elements By Stability Of Isotopes

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