|
0
|
neutron
|
1
|
\(n\)
|
1.008 665
|
\(\beta^{-}\)
|
10.37 min
|
|
1
|
Hydrogen
|
1
|
\({ }^{1} \mathrm{H}\)
|
1.007 825
|
99.985%
|
|
|
|
Deuterium
|
2
|
\({ }^{2} \mathrm{H} \text { or } \mathrm{D}\)
|
2.014 102
|
0.015%
|
|
|
|
Tritium
|
3
|
\({ }^{3} \mathrm{H} \text { or } \mathrm{T}\)
|
3.016 050
|
\(\beta^{-}\)
|
12.33 y
|
|
2
|
Helium
|
3
|
\({ }^{3} \mathrm{He}\)
|
3.016 030
|
\(1.38 \times 10^{-4} \%\)
|
|
|
|
|
4
|
\({ }^{4} \mathrm{He}\)
|
4.002 603
|
\(\approx 100 \%\)
|
|
|
3
|
Lithium
|
6
|
\({ }^{6} \mathrm{Li}\)
|
6.015 121
|
7.5%
|
|
|
|
|
7
|
\({ }^{7} \mathrm{Li}\)
|
7.016 003
|
92.5%
|
|
|
4
|
Beryllium
|
7
|
\({ }^{7} \mathrm{Be}\)
|
7.016 928
|
EC
|
53.29 d
|
|
|
|
9
|
\({ }^{9} \mathrm{Be}\)
|
9.012 182
|
100%
|
|
|
5
|
Boron
|
10
|
\({ }^{10} \mathrm{~B}\)
|
10.012 937
|
19.9%
|
|
|
|
|
11
|
\({ }^{11} \mathrm{~B}\)
|
11.009 305
|
80.1%
|
|
|
6
|
Carbon
|
11
|
\({ }^{11} \mathrm{C}\)
|
11.011 432
|
EC, \(\beta^{+}\)
|
|
|
|
|
12
|
\({ }^{12} \mathrm{C}\)
|
12.000 000
|
98.90%
|
|
|
|
|
13
|
\({ }^{13} \mathrm{C}\)
|
13.003 355
|
1.10%
|
|
|
|
|
14
|
\({ }^{14} \mathrm{C}\)
|
14.003 241
|
\(\beta^{-}\)
|
5730 y
|
|
7
|
Nitrogen
|
13
|
\({ }^{13} \mathrm{~N}\)
|
13.005 738
|
\(\beta^{+}\)
|
9.96 min
|
|
|
|
14
|
\({ }^{14} \mathrm{~N}\)
|
14.003 074
|
99.63%
|
|
|
|
|
15
|
\({ }^{15} \mathrm{~N}\)
|
15.000 108
|
0.37%
|
|
|
8
|
Oxygen
|
15
|
\({ }^{15} \mathrm{O}\)
|
15.003 065
|
EC, \(\beta^{+}\)
|
122 s
|
|
|
|
16
|
\({ }^{16} \mathrm{O}\)
|
15.994 915
|
99.76%
|
|
|
|
|
18
|
\({ }^{18} \mathrm{O}\)
|
17.999 160
|
0.200%
|
|
|
9
|
Fluorine
|
18
|
\({ }^{18} \mathrm{~F}\)
|
18.000 937
|
EC, \(\beta^{+}\)
|
1.83 h
|
|
|
|
19
|
\({ }^{19} \mathrm{~F}\)
|
18.998 403
|
100%
|
|
|
10
|
Neon
|
20
|
\({ }^{20} \mathrm{Ne}\)
|
19.992 435
|
90.51%
|
|
|
|
|
22
|
\({ }^{22} \mathrm{Ne}\)
|
21.991 383
|
9.22%
|
|
|
11
|
Sodium
|
22
|
\({ }^{22} \mathrm{Na}\)
|
21.994 434
|
\(\beta^{+}\)
|
2.602 y
|
|
|
|
23
|
\({ }^{23} \mathrm{Na}\)
|
22.989 767
|
100%
|
|
|
|
|
24
|
\({ }^{24} \mathrm{Na}\)
|
23.990 961
|
\(\beta^{-}\)
|
14.96 h
|
|
12
|
Magnesium
|
24
|
\({ }^{24} \mathrm{Mg}\)
|
23.985 042
|
78.99%
|
|
|
13
|
Aluminum
|
27
|
\({ }^{27} \mathrm{Al}\)
|
26.981 539
|
100%
|
|
|
14
|
Silicon
|
28
|
\({ }^{28} \mathrm{Si}\)
|
27.976 927
|
92.23%
|
2.62h
|
|
|
|
31
|
\({ }^{31} \mathrm{Si}\)
|
30.975 362
|
\(\beta^{-}\)
|
|
|
15
|
Phosphorus
|
31
|
\({ }^{31} \mathrm{P}\)
|
30.973 762
|
100%
|
|
|
|
|
32
|
\({ }^{32} \mathrm{P}\)
|
31.973 907
|
\(\beta^{-}\)
|
14.28 d
|
|
16
|
Sulfur
|
32
|
\(32 \mathrm{S}\)
|
31.972 070
|
95.02%
|
|
|
|
|
35
|
\({ }^{35} \mathrm{S}\)
|
34.969 031
|
\(\beta^{-}\)
|
87.4 d
|
|
17
|
Chlorine
|
35
|
\({ }^{35} \mathrm{Cl}\)
|
34.968 852
|
75.77%
|
|
|
|
|
37
|
\({ }^{37} \mathrm{Cl}\)
|
36.965 903
|
24.23%
|
|
|
18
|
Argon
|
40
|
\({ }^{40} \mathrm{Ar}\)
|
39.962 384
|
99.60%
|
|
|
19
|
Potassium
|
39
|
\({ }^{39} \mathrm{~K}\)
|
38.963 707
|
93.26%
|
|
|
|
|
40
|
\({ }^{40} \mathrm{~K}\)
|
39.963 999
|
0.0117%, EC, \(\beta^{-}\)
|
\(1.28 \times 10^{9} \mathrm{y}\)
|
|
20
|
Calcium
|
40
|
\({ }^{40} \mathrm{Ca}\)
|
39.962 591
|
96.94%
|
|
|
21
|
Scandium
|
45
|
\({ }^{45} \mathrm{Sc}\)
|
44.955 910
|
100%
|
|
|
22
|
Titanium
|
48
|
\({ }^{48} \mathrm{Ti}\)
|
47.947 947
|
73.8%
|
|
|
23
|
Vanadium
|
51
|
\({ }^{51} \mathrm{~V}\)
|
50.943 962
|
99.75%
|
|
|
24
|
Chromium
|
52
|
\({ }^{52} \mathrm{Cr}\)
|
51.940 509
|
83.79%
|
|
|
25
|
Manganese
|
55
|
\({ }^{55} \mathrm{Mn}\)
|
54.938 047
|
100%
|
|
|
26
|
Iron
|
56
|
\({ }^{56} \mathrm{Fe}\)
|
55.934 939
|
91.72%
|
|
|
27
|
Cobalt
|
59
|
\({ }^{59} \mathrm{Co}\)
|
58.933 198
|
100%
|
|
|
|
|
60
|
\({ }^{60} \mathrm{Co}\)
|
59.933 819
|
\(\beta^{-}\)
|
5.271 y
|
|
28
|
Nickel
|
58
|
\({ }^{58} \mathrm{Ni}\)
|
57.935 346
|
68.27%
|
|
|
|
|
60
|
\(60 \mathrm{Ni}\)
|
59.930 788
|
26.10%
|
|
|
29
|
Copper
|
63
|
\({ }^{63} \mathrm{Cu}\)
|
62.939 598
|
69.17%
|
|
|
|
|
65
|
\({ }^{65} \mathrm{Cu}\)
|
64.927 793
|
30.83%
|
|
|
30
|
Zinc
|
64
|
\({ }^{64} \mathrm{Zn}\)
|
63.929 145
|
48.6%
|
|
|
|
|
66
|
\({ }^{66} \mathrm{Zn}\)
|
65.926 034
|
27.9%
|
|
|
31
|
Gallium
|
69
|
\({ }^{69} \mathrm{Ga}\)
|
68.925 580
|
60.1%
|
|
|
32
|
Germanium
|
72
|
\({ }^{72} \mathrm{Ge}\)
|
71.922 079
|
27.4%
|
|
|
|
|
74
|
\({ }^{74} \mathrm{Ge}\)
|
73.921 177
|
36.5%
|
|
|
33
|
Arsenic
|
75
|
\({ }^{75} \mathrm{As}\)
|
74.921 594
|
100%
|
|
|
34
|
Selenium
|
80
|
\({ }^{80} \mathrm{Se}\)
|
79.916 520
|
49.7%
|
|
|
35
|
Bromine
|
79
|
\({ }^{79} \mathrm{Br}\)
|
78.918 336
|
50.69%
|
|
|
36
|
Krypton
|
84
|
\({ }^{84} \mathrm{Kr}\)
|
83.911 507
|
57.0%
|
|
|
37
|
Rubidium
|
85
|
\({ }^{85} \mathrm{Rb}\)
|
84.911 794
|
72.17%
|
|
|
38
|
Strontium
|
86
|
\({ }^{86} \mathrm{Sr}\)
|
85.909 267
|
9.86%
|
|
|
|
|
88
|
\({ }^{88} \mathrm{Sr}\)
|
87.905 619
|
82.58%
|
|
|
|
|
90
|
\({ }^{90} \mathrm{Sr}\)
|
89.907 738
|
\(\beta^{-}\)
|
28.8 y
|
|
39
|
Yttrium
|
89
|
\({ }^{89} \mathrm{Y}\)
|
88.905 849
|
100%
|
|
|
|
|
90
|
\({ }^{90} \mathrm{Y}\)
|
89.907 152
|
\(\beta^{-}\)
|
64.1 h
|
|
40
|
Zirconium
|
90
|
\({ }^{90} \mathrm{Zr}\)
|
89.904 703
|
51.45%
|
|
|
41
|
Niobium
|
93
|
\({ }^{93} \mathrm{Nb}\)
|
92.906 377
|
100%
|
|
|
42
|
Molybdenum
|
98
|
\({ }^{98} \mathrm{Mo}\)
|
97.905 406
|
24.13%
|
|
|
43
|
Technetium
|
98
|
\({ }^{98} \mathrm{Tc}\)
|
97.907 215
|
\(\beta^{-}\)
|
\(4.2 \times 10^{6} \mathrm{y}\)
|
|
44
|
Ruthenium
|
102
|
\({ }^{102} \mathrm{Ru}\)
|
101.904 348
|
31.6%
|
|
|
45
|
Rhodium
|
103
|
\({ }^{103} \mathrm{Rh}\)
|
102.905 500
|
100%
|
|
|
46
|
Palladium
|
106
|
\({ }^{106} \mathrm{Pd}\)
|
105.903 478
|
27.33%
|
|
|
47
|
Silver
|
107
|
\({ }^{107} \mathrm{Ag}\)
|
106.905 092
|
51.84%
|
|
|
|
|
109
|
\({ }^{109} \mathrm{Ag}\)
|
108.904 757
|
48.16%
|
|
|
48
|
Cadmium
|
114
|
\({ }^{114} \mathrm{Cd}\)
|
113.903 357
|
28.73%
|
|
|
49
|
Indium
|
115
|
\({ }^{115} \mathrm{In}\)
|
114.903 880
|
95.7%, \(\beta^{-}\)
|
\(4.4 \times 10^{14} \mathrm{y}\)
|
|
50
|
Tin
|
120
|
\({ }^{120} \mathrm{Sn}\)
|
119.902 200
|
32.59%
|
|
|
51
|
Antimony
|
121
|
\({ }^{121} \mathrm{Sb}\)
|
120.903 821
|
57.3%
|
|
|
52
|
Tellurium
|
130
|
\({ }^{130} \mathrm{Te}\)
|
129.906 229
|
33.8%, \(\beta^{-}\)
|
\(2.5 \times 10^{21} \mathrm{y}\)
|
|
53
|
Iodine
|
127
|
\({ }^{127} \mathrm{I}\)
|
126.904 473
|
100%
|
|
|
|
|
131
|
\({ }^{131} \mathrm{I}\)
|
130.906 114
|
\(\beta^{-}\)
|
8.040 d
|
|
54
|
Xenon
|
132
|
\({ }^{132} \mathrm{Xe}\)
|
131.904 144
|
26.9%
|
|
|
|
|
136
|
\({ }^{136} \mathrm{Xe}\)
|
135.907 214
|
8.9%
|
|
|
55
|
Cesium
|
133
|
\({ }^{133} \mathrm{Cs}\)
|
132.905 429
|
100%
|
|
|
|
|
134
|
\({ }^{134} \mathrm{Cs}\)
|
133.906 696
|
EC, \(\beta^{-}\)
|
2.06 y
|
|
56
|
Barium
|
137
|
\({ }^{137} \mathrm{Ba}\)
|
136.905 812
|
11.23%
|
|
|
|
|
138
|
\({ }^{138} \mathrm{Ba}\)
|
137.905 232
|
71.70%
|
|
|
57
|
Lanthanum
|
139
|
\({ }^{139} \mathrm{La}\)
|
138.906 346
|
99.91%
|
|
|
58
|
Cerium
|
140
|
\({ }^{140} \mathrm{Ce}\)
|
139.905 433
|
88.48%
|
|
|
59
|
Praseodymium
|
141
|
\({ }^{141} \mathrm{Pr}\)
|
140.907 647
|
100%
|
|
|
60
|
Neodymium
|
142
|
\({ }^{142} \mathrm{Nd}\)
|
141.907 719
|
27.13%
|
|
|
61
|
Promethium
|
145
|
\({ }^{145} \mathrm{Pm}\)
|
144.912 743
|
EC, \(\alpha\)
|
17.7 y
|
|
62
|
Samarium
|
152
|
\({ }^{152} \mathrm{Sm}\)
|
151.919 729
|
26.7%
|
|
|
63
|
Europium
|
153
|
\({ }^{153} \mathrm{Eu}\)
|
152.921 225
|
52.2%
|
|
|
64
|
Gadolinium
|
158
|
\({ }^{158} \mathrm{Gd}\)
|
157.924 099
|
24.84%
|
|
|
65
|
Terbium
|
159
|
\({ }^{159} \mathrm{Tb}\)
|
158.925 342
|
100%
|
|
|
66
|
Dysprosium
|
164
|
\({ }^{164} \mathrm{Dy}\)
|
163.929 171
|
28.2%
|
|
|
67
|
Holmium
|
165
|
\({ }^{165} \mathrm{Ho}\)
|
164.930 319
|
100%
|
|
|
68
|
Erbium
|
166
|
\({ }^{166} \mathrm{Er}\)
|
165.930 290
|
33.6%
|
|
|
69
|
Thulium
|
169
|
\({ }^{169} \mathrm{Tm}\)
|
168.934 212
|
100%
|
|
|
70
|
Ytterbium
|
174
|
\({ }^{174} \mathrm{Yb}\)
|
173.938 859
|
31.8%
|
|
|
71
|
Lutecium
|
175
|
\({ }^{175} \mathrm{Lu}\)
|
174.940 770
|
97.41%
|
|
|
72
|
Hafnium
|
180
|
\({ }^{180} \mathrm{Hf}\)
|
179.946 545
|
35.10%
|
|
|
73
|
Tantalum
|
181
|
\({ }^{181} \mathrm{Ta}\)
|
180.947 992
|
99.98%
|
|
|
74
|
Tungsten
|
184
|
\({ }^{184} \mathrm{W}\)
|
183.950 928
|
30.67%
|
|
|
75
|
Rhenium
|
187
|
\({ }^{187} \mathrm{Re}\)
|
186.955 744
|
62.6%, \(\beta^{-}\)
|
\(4.6 \times 10^{10} \mathrm{y}\)
|
|
76
|
Osmium
|
191
|
\({ }^{191} \mathrm{Os}\)
|
190.960 920
|
\(\beta^{-}\)
|
15.4 d
|
|
|
|
192
|
\({ }^{192} \mathrm{Os}\)
|
191.961 467
|
41.0%
|
|
|
77
|
Iridium
|
191
|
\({ }^{191} \mathrm{Ir}\)
|
190.960 584
|
37.3%
|
|
|
|
|
193
|
\({ }^{193} \mathrm{Ir}\)
|
192.962 917
|
62.7%
|
|
|
78
|
Platinum
|
195
|
\({ }^{195} \mathrm{Pt}\)
|
194.964 766
|
33.8%
|
|
|
79
|
Gold
|
197
|
\({ }^{197} \mathrm{Au}\)
|
196.966 543
|
100%
|
|
|
|
|
198
|
\({ }^{198} \mathrm{Au}\)
|
197.968 217
|
\(\beta^{-}\)
|
2.696 d
|
|
80
|
Mercury
|
199
|
\({ }^{199} \mathrm{Hg}\)
|
198.968 253
|
16.87%
|
|
|
|
|
202
|
\({ }^{202} \mathrm{Hg}\)
|
201.970 617
|
29.86%
|
|
|
81
|
Thallium
|
205
|
\({ }^{205} \mathrm{Tl}\)
|
204.974 401
|
70.48%
|
|
|
82
|
Lead
|
206
|
\({ }^{206} \mathrm{Pb}\)
|
205.974 440
|
24.1%
|
|
|
|
|
207
|
\({ }^{207} \mathrm{Pb}\)
|
206.975 872
|
22.1%
|
|
|
|
|
208
|
\({ }^{208} \mathrm{Pb}\)
|
207.976 627
|
52.4%
|
|
|
|
|
210
|
\({ }^{210} \mathrm{Pb}\)
|
209.984 163
|
\(\alpha, \beta^{-}\)
|
22.3 y
|
|
|
|
211
|
\({ }^{211} \mathrm{Pb}\)
|
210.988 735
|
\(\beta^{-}\)
|
36.1 min
|
|
|
|
212
|
\({ }^{212} \mathrm{Pb}\)
|
211.991 871
|
\(\beta^{-}\)
|
10.64 h
|
|
83
|
Bismuth
|
209
|
\({ }^{209} \mathrm{Bi}\)
|
208.980 374
|
100%
|
|
|
|
|
211
|
\({ }^{211} \mathrm{Bi}\)
|
210.987 255
|
\(\alpha, \beta^{-}\)
|
2.14 min
|
|
84
|
Polonium
|
210
|
\({ }^{210} \mathrm{Po}\)
|
209.982 848
|
\(\alpha\)
|
138.38 d
|
|
85
|
Astatine
|
218
|
\({ }^{218} \mathrm{At}\)
|
218.008 684
|
\(\alpha, \beta^{-}\)
|
1.6 s
|
|
86
|
Radon
|
222
|
\({ }^{222} \mathrm{Rn}\)
|
222.017 570
|
\(\alpha\)
|
3.82 d
|
|
87
|
Francium
|
223
|
\({ }^{223} \mathrm{Fr}\)
|
223.019 733
|
\(\alpha, \beta^{-}\)
|
21.8 min
|
|
88
|
Radium
|
226
|
\({ }^{226} \mathrm{Ra}\)
|
226.025 402
|
\(\alpha\)
|
\(1.60 \times 10^{3} \mathrm{y}\)
|
|
89
|
Actinium
|
227
|
\({ }^{227} \mathrm{Ac}\)
|
227.027 750
|
\(\alpha, \beta^{-}\)
|
21.8 y
|
|
90
|
Thorium
|
228
|
\({ }^{228} \mathrm{Th}\)
|
228.028 715
|
\(\alpha\)
|
1.91 y
|
|
|
|
232
|
\({ }^{232} \mathrm{Th}\)
|
232.038 054
|
100%, \(\alpha\)
|
\(1.41 \times 10^{10} \mathrm{y}\)
|
|
91
|
Protactinium
|
231
|
\({ }^{231} \mathrm{~Pa}\)
|
231.035 880
|
\(\alpha\)
|
\(3.28 \times 10^{4} \mathrm{y}\)
|
|
92
|
Uranium
|
233
|
\({ }^{233} \mathrm{U}\)
|
233.039 628
|
\(\alpha\)
|
\(1.59 \times 10^{3} \mathrm{y}\)
|
|
|
|
235
|
\({ }^{235} \mathrm{U}\)
|
235.043 924
|
0.720%, \(\alpha\)
|
\(7.04 \times 10^{8} \mathrm{y}\)
|
|
|
|
236
|
\({ }^{236} \mathrm{U}\)
|
236.045 562
|
\(\alpha\)
|
\(2.34 \times 10^{7} \mathrm{y}\)
|
|
|
|
238
|
\({ }^{238} \mathrm{U}\)
|
238.050 784
|
99.2745%, \(\alpha\)
|
\(4.47 \times 10^{9} \mathrm{y}\)
|
|
|
|
239
|
\({ }^{239} \mathrm{U}\)
|
239.054 289
|
\(\beta^{-}\)
|
23.5 min
|
|
93
|
Neptunium
|
239
|
\({ }^{239} \mathrm{Np}\)
|
239.052 933
|
\(\beta^{-}\)
|
2.355 d
|
|
94
|
Plutonium
|
239
|
\({ }^{239} \mathrm{Pu}\)
|
239.052 157
|
\(\alpha\)
|
\(2.41 \times 10^{4} \mathrm{y}\)
|
|
95
|
Americium
|
243
|
\({ }^{243} \mathrm{Am}\)
|
243.061 375
|
\(\alpha\), fission
|
\(7.37 \times 10^{3} \mathrm{y}\)
|
|
96
|
Curium
|
245
|
\({ }^{245} \mathrm{Cm}\)
|
245.065 483
|
\(\alpha\)
|
\(8.50 \times 10^{3} \mathrm{y}\)
|
|
97
|
Berkelium
|
247
|
\({ }^{247} \mathrm{Bk}\)
|
247.070 300
|
\(\alpha\)
|
\(1.38 \times 10^{3} \mathrm{y}\)
|
|
98
|
Californium
|
249
|
\({ }^{249} \mathrm{Cf}\)
|
249.074 844
|
\(\alpha\)
|
351 y
|
|
99
|
Einsteinium
|
254
|
\({ }^{254} \mathrm{Es}\)
|
254.088 019
|
\(\alpha, \beta^{-}\)
|
276 d
|
|
100
|
Fermium
|
253
|
\({ }^{253} \mathrm{Fm}\)
|
253.085 173
|
EC, \(\alpha\)
|
3.00 d
|
|
101
|
Mendelevium
|
255
|
\({ }^{255} \mathrm{Md}\)
|
255.091 081
|
EC, \(\alpha\)
|
27 min
|
|
102
|
Nobelium
|
255
|
\({ }^{255} \mathrm{No}\)
|
255.093 260
|
EC, \(\alpha\)
|
3.1 min
|
|
103
|
Lawrencium
|
257
|
\({ }^{257} \mathrm{Lr}\)
|
257.099 480
|
EC, \(\alpha\)
|
0.646 s
|
|
104
|
Rutherfordium
|
261
|
\({ }^{261} \mathrm{Rf}\)
|
261.108 690
|
\(\alpha\)
|
1.08 min
|
|
105
|
Dubnium
|
262
|
\({ }^{262} \mathrm{Db}\)
|
262.113 760
|
\(\alpha\), fission
|
34 s
|
|
106
|
Seaborgium
|
263
|
\({ }^{263} \mathrm{Sg}\)
|
263.11 86
|
\(\alpha\), fission
|
0.8 s
|
|
107
|
Bohrium
|
262
|
\({ }^{262} \mathrm{Bh}\)
|
262.123 1
|
\(\alpha\)
|
0.102 s
|
|
108
|
Hassium
|
264
|
\({ }^{264} \mathrm{Hs}\)
|
264.128 5
|
\(\alpha\)
|
0.08 ms
|
|
109
|
Meitnerium
|
266
|
\({ }^{266} \mathrm{Mt}\)
|
266.137 8
|
\(\alpha\)
|
3.4 ms
|