Comission on Isotopic Abundances and Atomic Weights 2013
International Union of Pure and Applied Chemistry
http://www.ciaaw.org/isotopic-abundances.htm


1   H   hydrogen    1   [0.999 72, 0.999 99]    m
2   [0.000 01, 0.000 28]
2   He  helium  3    0.000 002(2)   g r
4    0.999 998(2)
3   Li  lithium 6   [0.019, 0.078]  m
7   [0.922, 0.981]
4   Be  beryllium   9    1
5   B   boron   10  [0.189, 0.204]  m
11  [0.796, 0.811]
6   C   carbon  12  [0.9884, 0.9904]
13  [0.0096, 0.0116]
7   N   nitrogen    14  [0.995 78, 0.996 63]
15  [0.003 37, 0.004 22]
8   O   oxygen  16  [0.997 38, 0.997 76]
17  [0.000 367, 0.000 400]
18  [0.001 87, 0.002 22]
9   F   fluorine    19   1
10  Ne  neon    20   0.9048(3)  g m
21   0.0027(1)
22   0.0925(3)
11  Na  sodium  23   1
12  Mg  magnesium   24  [0.7888, 0.7905]
25  [0.099 88, 0.100 34]
26  [0.1096, 0.1109]
13  Al  aluminium   27   1
14  Si  silicon 28  [0.921 91, 0.923 18]
29  [0.046 45, 0.046 99]
30  [0.030 37, 0.031 10]
15  P   phosphorus  31   1
16  S   sulfur  32  [0.9441, 0.9529]
33  [0.007 29, 0.007 97]
34  [0.0396, 0.0477]
36  [0.000 129, 0.000 187]
17  Cl  chlorine    35  [0.755, 0.761]  m
37  [0.239, 0.245]
18  Ar  argon   36   0.003 336(210) g r
38   0.000 629(70)
40   0.996 035(250)
19  K   potassium   39   0.932 581(44)
40   0.000 117(1)
41   0.067 302(44)
20  Ca  calcium 40   0.969 41(156)  g
42   0.006 47(23)
43   0.001 35(10)
44   0.020 86(110)
46   0.000 04(3)
48   0.001 87(21)
21  Sc  scandium    45   1
22  Ti  titanium    46   0.0825(3)
47   0.0744(2)
48   0.7372(3)
49   0.0541(2)
50   0.0518(2)
23  V   vanadium    50   0.002 50(10)
51   0.997 50(10)
24  Cr  chromium    50   0.043 45(13)
52   0.837 89(18)
53   0.095 01(17)
54   0.023 65(7)
25  Mn  manganese   55   1
26  Fe  iron    54   0.058 45(105)
56   0.917 54(106)
57   0.021 19(29)
58   0.002 82(12)
27  Co  cobalt  59   1
28  Ni  nickel  58   0.680 769(190) r
60   0.262 231(150)
61   0.011 399(13)
62   0.036 345(40)
64   0.009 256(19)
29  Cu  copper  63   0.6915(15) r
65   0.3085(15)
30  Zn  zinc    64   0.4917(75) r
66   0.2773(98)
67   0.0404(16)
68   0.1845(63)
70   0.0061(10)
31  Ga  gallium 69   0.601 08(50)
71   0.398 92(50)
32  Ge  germanium   70   0.2052(19)
72   0.2745(15)
73   0.0776(8)
74   0.3652(12)
76   0.0775(12)
33  As  arsenic 75   1
34  Se  selenium    74   0.0086(3)  r
76   0.0923(7)
77   0.0760(7)
78   0.2369(22)
80   0.4980(36)
82   0.0882(15)
35  Br  bromine 79  [0.505, 0.508]
81  [0.492, 0.495]
36  Kr  krypton 78   0.003 55(3)    g m
80   0.022 86(10)
82   0.115 93(31)
83   0.115 00(19)
84   0.569 87(15)
86   0.172 79(41)
37  Rb  rubidium    85   0.7217(2)  g
87   0.2783(2)
38  Sr  strontium   84   0.0056(2)  g r
86   0.0986(20)
87   0.0700(20)
88   0.8258(35)
39  Y   yttrium 89   1
40  Zr  zirconium   90   0.5145(4)  g
91   0.1122(5)
92   0.1715(3)
94   0.1738(4)
96   0.0280(2)
41  Nb  niobium 93   1
42  Mo  molybdenum  92   0.146 49(106)  g
94   0.091 87(33)
95   0.158 73(30)
96   0.166 73(8)
97   0.095 82(15)
98   0.242 92(80)
100  0.097 44(65)
43  Tc  technetium  [97]    -
44  Ru  ruthenium   96   0.0554(14) g
98   0.0187(3)
99   0.1276(14)
100  0.1260(7)
101  0.1706(2)
102  0.3155(14)
104  0.1862(27)
45  Rh  rhodium 103  1
46  Pd  palladium   102  0.0102(1)  g
104  0.1114(8)
105  0.2233(8)
106  0.2733(3)
108  0.2646(9)
110  0.1172(9)
47  Ag  silver  107  0.518 39(8)    g
109  0.481 61(8)
48  Cd  cadmium 106  0.012 45(22)   g
108  0.008 88(11)
110  0.124 70(61)
111  0.127 95(12)
112  0.241 09(7)
113  0.122 27(7)
114  0.287 54(81)
116  0.075 12(54)
49  In  indium  113  0.042 81(52)
115  0.957 19(52)
50  Sn  tin 112  0.0097(1)  g
114  0.0066(1)
115  0.0034(1)
116  0.1454(9)
117  0.0768(7)
118  0.2422(9)
119  0.0859(4)
120  0.3258(9)
122  0.0463(3)
124  0.0579(5)
51  Sb  antimony    121  0.5721(5)  g
123  0.4279(5)
52  Te  tellurium   120  0.0009(1)  g
122  0.0255(12)
123  0.0089(3)
124  0.0474(14)
125  0.0707(15)
126  0.1884(25)
128  0.3174(8)
130  0.3408(62)
53  I   iodine  127  1
54  Xe  xenon   124  0.000 95(5)    g m
126  0.000 89(3)
128  0.019 10(13)
129  0.264 01(138)
130  0.040 71(22)
131  0.212 32(51)
132  0.269 09(55)
134  0.104 36(35)
136  0.088 57(72)
55  Cs  caesium 133  1
56  Ba  barium  130  0.0011(1)
132  0.0010(1)
134  0.0242(15)
135  0.0659(10)
136  0.0785(24)
137  0.1123(23)
138  0.7170(29)
57  La  lanthanum   138  0.000 8881(71) g
139  0.999 1119(71)
58  Ce  cerium  136  0.001 86(2)    g
138  0.002 51(2)
140  0.884 49(51)
142  0.111 14(51)
59  Pr  praseodymium    141  1
60  Nd  neodymium   142  0.271 53(40)   g
143  0.121 73(26)
144  0.237 98(19)
145  0.082 93(12)
146  0.171 89(32)
148  0.057 56(21)
150  0.056 38(28)
61  Pm  promethium  [145]    -
62  Sm  samarium    144  0.0308(4)  g
147  0.1500(14)
148  0.1125(9)
149  0.1382(10)
150  0.0737(9)
152  0.2674(9)
154  0.2274(14)
63  Eu  europium    151  0.4781(6)  g
153  0.5219(6)
64  Gd  gadolinium  152  0.0020(3)  g
154  0.0218(2)
155  0.1480(9)
156  0.2047(3)
157  0.1565(4)
158  0.2484(8)
160  0.2186(3)
65  Tb  terbium 159  1
66  Dy  dysprosium  156  0.000 56(3)    g
158  0.000 95(3)
160  0.023 29(18)
161  0.188 89(42)
162  0.254 75(36)
163  0.248 96(42)
164  0.282 60(54)
67  Ho  holmium 165  1
68  Er  erbium  162  0.001 39(5)    g
164  0.016 01(3)
166  0.335 03(36)
167  0.228 69(9)
168  0.269 78(18)
170  0.149 10(36)
69  Tm  thulium 169  1
70  Yb  ytterbium   168  0.001 26(1)    g
170  0.030 23(2)
171  0.142 16(7)
172  0.217 54(10)
173  0.160 98(9)
174  0.318 96(26)
176  0.128 87(30)
71  Lu  lutetium    175  0.974 01(13)   g
176  0.025 99(13)
72  Hf  hafnium 174  0.0016(12)
176  0.0526(70)
177  0.1860(16)
178  0.2728(28)
179  0.1362(11)
180  0.3508(33)
73  Ta  tantalum    180  0.000 1201(32)
181  0.999 8799(32)
74  W   tungsten    180  0.0012(1)
182  0.2650(16)
183  0.1431(4)
184  0.3064(2)
186  0.2843(19)
75  Re  rhenium 185  0.3740(5)
187  0.6260(5)
76  Os  osmium  184  0.0002(2)  g
186  0.0159(64)
187  0.0196(17)
188  0.1324(27)
189  0.1615(23)
190  0.2626(20)
192  0.4078(32)
77  Ir  iridium 191  0.373(2)
193  0.627(2)
78  Pt  platinum    190  0.000 12(2)
192  0.007 82(24)
194  0.328 64(410)
195  0.337 75(240)
196  0.252 11(340)
198  0.073 56(130)
79  Au  gold    197  1
80  Hg  mercury 196  0.0015(1)
198  0.1004(3)
199  0.1694(12)
200  0.2314(9)
201  0.1317(9)
202  0.2974(13)
204  0.0682(4)
81  Tl  thallium    203 [0.2944, 0.2959]
205 [0.7041, 0.7056]
82  Pb  lead    204  0.014(6)   g r
206  0.241(30)
207  0.221(50)
208  0.524(70)
83  Bi  bismuth 209  1
84  Po  polonium    [209]    -
85  At  astatine    [210]    -
86  Rn  radon   [222]    -
87  Fr  francium    [223]    -
88  Ra  radium  [226]    -
89  Ac  actinium    [227]    -
90  Th  thorium 230  0.0002(2)
232  0.9998(2)
91  Pa  protactinium    231  1
92  U   uranium 234  0.000 054(5)   g m
235  0.007 204(6)
238  0.992 742(10)
