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Isotopic Abundance (Nominal)


  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
H 99.9 0.02

















He

tr* 100















Li




7.5 92.5












Be







100










B








19.8 80.2








C










98.9 1.10






N












99.6 0.37




O














99.8 0.04 0.20

F

















100
Ne


















90.5
  21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
Ne 0.27 9.22

















Na

100
















Mg


79.0 10.0 11.0













Al





100












Si






92.2 4.67 3.10









P









100








S










95.0 0.75 4.21
0.02



Cl













75.8
24.2


Ar














0.34
0.06
99.6
K

















93.3 0.01
Ca


















96.9
  41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60
K 6.73


















Ca
0.65 0.14 2.09
tr*
0.19











Sc



100














Ti




8.0 7.3 73.8 5.5 5.4









V








0.25 99.8








Cr








4.35
83.8 9.50 2.37





Mn













100




Fe












5.8
91.7 2.2 0.28

Co


















100
Ni
















68.3
26.1
  61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
Ni 1.13 3.59
0.91















Cu

69.2
30.8














Zn


48.6
27.9 4.1 18.8
0.6









Ga







60.1
39.9








Ge








20.5
27.4 7.8 36.5
7.8



As













100




Se












0.9
9.0 7.6 23.5
49.6
Br

















50.7
Kr
















0.35
2.25
  81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
Se
9.4

















Br 49.3


















Kr
11.6 11.5 57.0
17.3













Rb



72.2
27.8












Sr


0.56
9.86 7.00 82.6











Y







100










Zr








51.5 11.3 17.2
17.3
2.78



Nb











100






Mo










14.8
9.25 15.9 16.7 9.55 24.1
9.63
Ru














5.52
1.88 12.7 12.6

101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120
Ru 17.0 31.6
18.7















Rh

100
















Pd
1.02
11.1 22.3 27.3
26.5
11.7









Ag





51.8
48.2










Cd




1.25
0.89
12.5 12.8 24.1 12.2 28.7
7.49



In











4.3
95.7




Sn










1.0
0.7 0.4 14.7 7.7 24.3 8.6 32.4
Te


















0.10
  121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140
Sn
4.6
5.66















Sb 57.3
42.7
















Te
2.60 0.91 4.82 7.14 19.0
31.7
33.8









I





100












Xe


0.10
0.09
1.91 26.4 4.1 21.2 26.9
10.4
8.9



Cs











100






Ba








0.11
0.10
2.42 6.59 7.85 11.2 71.7

La
















0.09 99.9
Ce














0.19
0.25
88.5
  141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160
Ce
11.1

















Pr 100


















Nd
27.1 12.2 23.8 8.30 17.2
5.76
5.64









Sm


3.1

15.0 11.3 13.8 7.4
26.7
22.7





Eu









47.8
52.2






Gd










0.20
2.18 14.8 20.5 15.7 24.8
21.9
Tb

















100
Dy














0.06
0.10
2.34
  161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
Dy 18.9 25.5 24.9 28.2















Ho



100














Er
0.14
1.61
33.6 23.0 26.8
14.9









Tm







100










Yb






0.13
3.05 14.3 21.9 16.1 31.8
12.7



Lu













97.4 2.59



Hf












0.16
5.2 18.6 27.1 13.7 35.2
Ta


















0.01
W


















0.13

181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200
Ta 100


















W
26.3 14.3 30.7
28.6













Re



37.4
62.6












Os


0.02
1.58 1.6 13.3 16.1 26.4
41.0







Ir









37.3
62.7






Pt








0.01
0.79
32.9 33.8 25.3
7.2

Au















100


Hg














0.15
10.1 17 23.1

201 202 203 204 205 206 207 208 209 ... 228 232 233 234 235 236 237 238 239 240
Hg 13.2 29.7
6.8















Tl

29.5
70.5














Pb


1.4
24.1 22.1 52.4











Bi







100










Th










100







U












0.01 0.72

99.3

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