Home

Elements and Isotopes

Isotoop # Element Symbol Mass Number Mass Δ Mass Abundance (%)
1 Aluminum Al 27 26,98154 100
1 Antimony Sb 121 120,90382 57,3
2 Antimony Sb 123 122,90422 2,0004 42,7
1 Argon Ar 36 35,96755 -3,99484 0,34
2 Argon Ar 38 37,96273 -1,99965 0,063
3 Argon Ar 40 39,96238 99,6
1 Arsenic As 75 74,9216 100
1 Barium Ba 130 129,90628 -7,99896 0,11
2 Barium Ba 132 131,90504 -6,00019 0,1
3 Barium Ba 134 133,90449 -4,00075 2,42
4 Barium Ba 135 134,90567 -2,99957 6,59
5 Barium Ba 136 135,90456 -2,00068 7,85
6 Barium Ba 137 136,90582 -0,99942 11,23
7 Barium Ba 138 137,90524 71,7
1 Beryllium Be 9 9,01218 100
1 Bismuth Bi 209 208,98039 100
1 Boron B 10 10,01294 -0,99637 19,8
2 Boron B 11 11,00931 80,2
1 Bromine Br 79 78,91834 50,69
2 Bromine Br 81 80,91629 1,99795 49,31
1 Cadmium Cd 106 105,90646 -7,9969 1,25
2 Cadmium Cd 110 109,90301 -4,00035 12,49
3 Cadmium Cd 111 110,90418 -2,99918 12,8
4 Cadmium Cd 112 111,90276 -2,0006 24,13
5 Cadmium Cd 113 112,9044 -0,99896 12,22
6 Cadmium Cd 114 113,90336 28,73
7 Cadmium Cd 116 115,90476 2,0014 7,49
1 Calcium Ca 40 39,96259 96,95
2 Calcium Ca 42 41,95862 1,99603 0,65
3 Calcium Ca 43 42,95877 2,99618 0,14
4 Calcium Ca 44 43,95549 3,99289 2,086
5 Calcium Ca 46 45,95369 5,9911 0,004
6 Calcium Ca 48 47,95253 7,98994 0,19
1 Carbon C 12 12 98,9
2 Carbon C 13 13,00336 1,00336 1,1
1 Cerium Ce 136 135,90714 -3,9983 0,19
2 Cerium Ce 138 137,906 -1,99945 0,25
3 Cerium Ce 140 139,90544 88,48
4 Cerium Ce 142 141,90925 2,00381 11,08
1 Cesium Cs 133 132,90543 100
1 Chlorine Cl 35 34,96885 75,77
2 Chlorine Cl 37 36,9659 1,99705 24,23
1 Chromium Cr 50 49,94605 -1,99446 4,35
2 Chromium Cr 52 51,94051 83,79
3 Chromium Cr 53 52,94065 1,00014 9,5
4 Chromium Cr 54 53,93888 1,99837 2,36
1 Cobalt Co 59 58,9332 100
1 Copper Cu 63 62,9296 69,17
2 Copper Cu 65 64,92779 1,99819 30,83
1 Dysprosium Dy 156 155,92429 -8,0049 0,06
2 Dysprosium Dy 158 157,92441 -6,00477 0,1
3 Dysprosium Dy 160 159,9252 -4,00398 2,34
4 Dysprosium Dy 161 160,92694 -3,00224 18,9
5 Dysprosium Dy 162 161,92681 -2,00238 25,5
6 Dysprosium Dy 163 162,92874 -1,00045 24,9
7 Dysprosium Dy 164 163,92918 28,2
1 Erbium Er 162 161,92879 -4,00152 0,14
2 Erbium Er 164 163,92921 -2,00109 1,61
3 Erbium Er 166 165,93031 33,6
4 Erbium Er 167 166,93206 1,00176 22,95
5 Erbium Er 168 167,93238 2,00208 26,8
6 Erbium Er 170 169,93548 4,00517 14,9
1 Europium Eu 151 150,91986 -2,00138 47,8
2 Europium Eu 153 152,92124 52,2
1 Fluorine F 19 18,9984 100
1 Gadolinium Gd 152 151,9198 -6,00431 0,2
2 Gadolinium Gd 154 153,92088 -4,00324 2,18
3 Gadolinium Gd 155 154,82263 -3,10148 14,8
4 Gadolinium Gd 156 155,92213 -2,00198 20,47
5 Gadolinium Gd 157 156,92397 -1,00014 15,65
6 Gadolinium Gd 158 157,92411 24,84
7 Gadolinium Gd 160 159,92706 2,00295 21,86
1 Gallium Ga 69 68,92558 60,1
2 Gallium Ga 71 70,9247 1,99912 39,9
1 Germanium Ge 70 69,92425 -3,99693 20,5
2 Germanium Ge 72 71,92208 -1,9991 27,4
3 Germanium Ge 73 72,92346 -0,99771 7,8
4 Germanium Ge 74 73,92118 36,5
5 Germanium Ge 76 75,9214 2,00022 7,8
1 Gold Au 197 196,96656 100
1 Hafnium Hf 174 173,94007 -6,0065 0,16
2 Hafnium Hf 176 175,94142 -4,00514 5,2
3 Hafnium Hf 177 176,94323 -3,00333 18,6
4 Hafnium Hf 178 177,94371 -2,00285 27,1
5 Hafnium Hf 179 178,94583 -1,00073 13,74
6 Hafnium Hf 180 179,94656 35,2
1 Helium He 3 3,01603 -0,98657 0,0001
2 Helium He 4 4,0026 100
1 Holmium Ho 165 164,93033 100
1 Hydrogen H 1 1,00783 99,99
2 Hydrogen H 2 2,0141 1,00628 0,015
1 Indium In 113 112,90406 -1,99982 4,3
2 Indium In 115 114,90388 95,7
1 Iodine I 127 126,90448 100
1 Iridium Ir 191 190,9606 -2,00234 37,3
2 Iridium Ir 193 192,96294 62,7
1 Iron Fe 54 53,93961 -1,99533 5,8
2 Iron Fe 56 55,93494 91,72
3 Iron Fe 57 56,9354 1,00046 2,2
4 Iron Fe 58 57,93328 1,99834 0,28
1 Krypton Kr 78 77,9204 -5,99111 0,35
2 Krypton Kr 80 79,91638 -3,99513 2,25
3 Krypton Kr 82 81,91348 -1,99802 11,6
4 Krypton Kr 83 82,91413 -0,99737 11,5
5 Krypton Kr 84 83,91151 57
6 Krypton Kr 86 85,91061 1,99911 17,3
1 Lanthanum La 138 137,90711 -0,99924 0,09
2 Lanthanum La 139 138,90636 99,91
1 Lead Pb 204 203,97304 1,4
2 Lead Pb 206 205,97446 -2,00219 24,1
3 Lead Pb 207 206,97589 -1,00076 22,1
4 Lead Pb 208 207,97664 52,4
1 Lithium Li 6 6,01512 -1,00088 7,42
2 Lithium Li 7 7,01601 92,58
1 Lutetium Lu 175 174,94079 97,4
2 Lutetium Lu 176 175,94269 1,00191 2,6
1 Magnesium Mg 24 23,98505 78,9
2 Magnesium Mg 25 24,98584 1,00079 10
3 Magnesium Mg 26 25,9826 1,99755 11,1
1 Manganese Mn 55 54,93805 100
1 Mercury Hg 196 195,96581 -6,00482 0,15
2 Mercury Hg 198 197,96676 -4,00387 10,1
3 Mercury Hg 199 198,96827 -3,00236 17
4 Mercury Hg 200 199,96832 -2,00232 23,1
5 Mercury Hg 201 200,97029 -1,00034 13,2
6 Mercury Hg 202 201,97063 29,65
7 Mercury Hg 204 203,97348 2,00285 6,8
1 Molybdenum Mo 92 91,90681 -5,9986 14,84
2 Molybdenum Mo 94 93,90509 -4,00032 9,25
3 Molybdenum Mo 95 94,90584 -2,99957 15,92
4 Molybdenum Mo 96 95,90468 -2,00073 16,68
5 Molybdenum Mo 97 96,90602 -0,99939 9,55
6 Molybdenum Mo 98 97,90541 24,13
7 Molybdenum Mo 100 99,90747 2,00207 9,63
1 Neodymium Nd 142 141,90773 27,13
2 Neodymium Nd 143 142,90982 1,00209 12,18
3 Neodymium Nd 144 143,9101 2,00237 23,8
4 Neodymium Nd 145 144,91258 3,00485 8,3
5 Neodymium Nd 146 145,91313 4,00539 17,19
6 Neodymium Nd 148 147,9169 6,00917 5,76
7 Neodymium Nd 150 149,9209 8,01317 5,64
1 Neon Ne 20 19,99244 90,6
2 Neon Ne 21 20,99385 1,00141 0,26
3 Neon Ne 22 21,99138 1,99895 9,2
1 Nickel Ni 58 57,93535 68,27
2 Nickel Ni 60 59,93079 1,99544 26,1
3 Nickel Ni 61 60,93106 2,99571 1,13
4 Nickel Ni 62 61,92835 3,993 3,59
5 Nickel Ni 64 63,92797 5,99262 0,91
1 Niobium Nb 93 92,90638 100
1 Nitrogen N 14 14,00307 99,63
2 Nitrogen N 15 15,00011 0,99704 0,37
1 Osmium Os 184 183,95251 -8,00897 0,02
2 Osmium Os 186 185,95385 -6,00763 1,58
3 Osmium Os 187 186,95576 -5,00573 1,6
4 Osmium Os 188 187,95585 -4,00564 13,3
5 Osmium Os 189 188,95816 -3,00333 16,1
6 Osmium Os 190 189,95846 -2,00303 26,4
7 Osmium Os 192 191,96149 41
1 Oxygen O 16 15,99492 99,76
2 Oxygen O 17 16,99913 1,00422 0,038
3 Oxygen O 18 17,99916 2,00424 0,2
1 Palladium Pd 102 101,90561 -3,99787 1,02
2 Palladium Pd 104 103,90403 -1,99945 11,14
3 Palladium Pd 105 104,90508 -0,9984 22,33
4 Palladium Pd 106 105,90348 27,33
5 Palladium Pd 108 107,90389 2,00042 26,46
6 Palladium Pd 110 109,90517 4,00169 11,72
1 Phosphorus P 31 30,97376 100
1 Platinum Pt 190 189,95994 -5,00485 0,01
2 Platinum Pt 192 191,96105 -3,00374 0,79
3 Platinum Pt 194 193,96268 -1,00211 32,9
4 Platinum Pt 195 194,96479 33,8
5 Platinum Pt 196 195,96495 1,00016 25,3
6 Platinum Pt 198 197,96788 3,00309 7,2
1 Potassium K 39 38,96371 93,2
2 Potassium K 40 39,964 1,00029 0,012
3 Potassium K 41 40,96183 1,99812 6,73
1 Praseodymium Pr 141 140,90766 100
1 Rhenium Re 185 184,95298 -2,00279 37,4
2 Rhenium Re 187 186,95577 62,6
1 Rhodium Rh 103 102,9055 100
1 Rubidium Rb 85 84,9118 72,17
2 Rubidium Rb 87 86,90918 1,99738 27,84
1 Ruthenium Ru 96 95,9076 -5,99675 5,52
2 Ruthenium Ru 98 97,90529 -3,99906 1,88
3 Ruthenium Ru 99 98,90594 -2,99841 12,7
4 Ruthenium Ru 100 99,90422 -2,00013 12,6
5 Ruthenium Ru 101 100,90558 -0,99877 17
6 Ruthenium Ru 102 101,90435 31,6
7 Ruthenium Ru 104 103,90542 2,00107 18,7
1 Samarium Sm 144 143,91201 -8,00773 3,1
2 Samarium Sm 147 146,91491 -5,00483 15
3 Samarium Sm 148 147,91483 -4,00491 11,3
4 Samarium Sm 149 148,91719 -3,00255 13,8
5 Samarium Sm 150 149,91729 -2,00246 7,4
6 Samarium Sm 152 151,91974 26,7
7 Samarium Sm 154 153,92222 2,00248 22,7
1 Scandium Sc 45 44,95591 100
1 Selenium Se 74 73,92248 -5,99404 0,9
2 Selenium Se 76 75,91921 -3,99731 9
3 Selenium Se 77 76,91991 -2,99661 7,6
4 Selenium Se 78 77,9173 -1,99922 23,5
5 Selenium Se 80 79,91652 49,6
6 Selenium Se 82 81,91671 2,00019 9,4
1 Silicon Si 28 27,97693 92,23
2 Silicon Si 29 28,9765 0,99957 4,67
3 Silicon Si 30 29,97377 1,99684 3,1
1 Silver Ag 107 106,9051 51,84
2 Silver Ag 109 108,90475 1,99966 48,16
1 Sodium Na 23 22,98977 100
1 Strontium Sr 84 83,91343 -3,9922 0,56
2 Strontium Sr 86 85,90927 -1,99635 9,86
3 Strontium Sr 87 86,9089 -0,99672 7
4 Strontium Sr 88 87,90563 82,58
1 Sulfur S 32 31,97207 95,02
2 Sulfur S 33 32,97146 0,99939 0,75
3 Sulfur S 34 33,96787 1,9958 4,21
4 Sulfur S 36 35,96708 3,99501 0,02
1 Tantalum Ta 180 179,94749 -1,00053 0,012
2 Tantalum Ta 181 180,94801 99,99
1 Tellurium Te 122 121,90306 -8,00317 2,6
2 Tellurium Te 123 122,90428 -7,00195 0,91
3 Tellurium Te 124 123,90283 -6,0034 4,82
4 Tellurium Te 125 124,90444 -5,00179 7,14
5 Tellurium Te 126 125,90331 -4,00292 18,95
6 Tellurium Te 128 127,90446 -2,00176 31,69
7 Tellurium Te 130 129,90623 33,8
1 Terbium Tb 159 158,92535 100
1 Thallium Tl 203 202,97234 -2,00207 29,52
2 Thallium Tl 205 204,97441 70,48
1 Thorium Th 232 232,03805 100
1 Thulium Tm 169 168,93423 100
1 Tin Sn 112 111,90483 -7,99737 0,97
2 Tin Sn 114 113,90278 -5,99942 0,65
3 Tin Sn 115 114,903348 -4,998851 0,36
4 Tin Sn 116 115,90174 -4,00046 14,7
5 Tin Sn 117 116,90295 -2,99925 7,7
6 Tin Sn 118 117,90161 -2,00059 24,3
7 Tin Sn 119 118,90331 -0,99889 8,6
8 Tin Sn 120 119,9022 32,4
9 Tin Sn 122 121,90344 2,00124 4,6
10 Tin Sn 124 123,90527 4,00307 5,6
1 Titanium Ti 46 45,95263 -1,99531 8
2 Titanium Ti 47 46,95177 -0,99618 7,3
3 Titanium Ti 48 47,94795 73,8
4 Titanium Ti 49 48,94787 0,99992 5,5
5 Titanium Ti 50 49,94479 1,99684 5,4
1 Tungsten W 180 179,94673 -4,00423 0,13
2 Tungsten W 182 181,94823 -2,00273 26,3
3 Tungsten W 183 182,95025 -1,00071 14,3
4 Tungsten W 184 183,95095 30,67
5 Tungsten W 186 185,95438 2,00342 28,6
1 Uranium U 234 234,04095 -4,00984 0,006
2 Uranium U 235 235,04393 -3,00686 0,72
3 Uranium U 238 238,05079 99,27
1 Vanadium V 50 49,94716 -0,9968 0,25
2 Vanadium V 51 50,94396 99,75
1 Xenon Xe 36 135,90722 4,00307 8,9
2 Xenon Xe 124 123,90589 -7,99825 0,1
3 Xenon Xe 126 125,90428 -5,99987 0,09
4 Xenon Xe 128 127,90353 -4,00062 1,91
5 Xenon Xe 129 128,90478 -2,99937 26,4
6 Xenon Xe 130 129,90351 -2,00064 4,1
7 Xenon Xe 131 130,90508 -0,99907 21,2
8 Xenon Xe 132 131,90415 26,9
9 Xenon Xe 134 133,9054 2,00125 10,4
1 Ytterbium Yb 168 167,93391 -6,00497 0,13
2 Ytterbium Yb 170 169,93477 -4,0041 3,05
3 Ytterbium Yb 171 170,93634 -3,00253 14,3
4 Ytterbium Yb 172 171,93639 -2,00248 21,9
5 Ytterbium Yb 173 172,93822 -1,00065 16,12
6 Ytterbium Yb 174 173,93887 31,8
7 Ytterbium Yb 176 175,94258 2,0037 12,7
1 Yttrium Y 89 88,90586 100
1 Zinc Zn 64 63,92915 48,6
2 Zinc Zn 66 65,92604 1,99689 27,9
3 Zinc Zn 67 66,92713 2,99798 4,1
4 Zinc Zn 68 67,92485 3,9957 18,8
5 Zinc Zn 70 69,92533 5,99618 0,6
1 Zirconium Zr 90 89,90471 51,45
2 Zirconium Zr 91 90,90564 1,00094 11,27
3 Zirconium Zr 92 91,90504 2,00033 17,17
4 Zirconium Zr 94 93,90632 4,00161 17,33
5 Zirconium Zr 96 95,90827 6,00356 2,78