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Stable Isotopes
| Z | Symbol | Name | Stable Isotopes |
| 1 | H | Hydrogen |
H-1: 99.985% H-2: 0.015% |
|---|---|---|---|
| 2 | He | Helium |
He-3: 0.000138% He-4: 99.999862% |
| 3 | Li | Lithium |
Li-6: 7.5% Li-7: 92.5% |
| 4 | Be | Beryllium | Be-9: 100% |
| 5 | B | Boron |
B-10: 20.0% B-11: 80.0% |
| 6 | C | Carbon |
C-12: 98.90% C-13: 1.10% |
| 7 | N | Nitrogen |
N-14: 99.63% N-15: 0.37% |
| 8 | O | Oxygen |
O-16: 99.762% O-17: 0.038% O-18: 0.200% |
| 9 | F | Fluorine | F-19: 100% |
| 10 | Ne | Neon |
90.51%Ne-20: Ne-21: 0.27% Ne-22: 9.22% |
| 11 | Na | Sodium | Na-23: 100% |
| 12 | Mg | Magnesium |
Mg-24: 78.99% Mg-25: 10.00% Mg-26: 11.01% |
| 13 | Al | Aluminium | Al-27: 100% |
| 14 | Si | Silicon |
Si-32: 92.23% Si-33: 4.67% Si-34: 3.10% |
| 15 | P | Phosphorus | P-31: 100% |
| 16 | S | Sulfur |
S-32: 95.02% S-33: 0.75% S-34: 4.21% S-36: 0.02% |
| 17 | Cl | Chlorine |
Cl-35: 75.77% Cl-37: 24.23% |
| 18 | Ar | Argon |
Ar-36: 0.337% Ar-38: 0.063% Ar-40: 99.600% |
| 19 | K | Potassium |
K-39: 93.2581% K-41: 6.7302% |
| 20 | Ca | Calcium |
Ca-40: 96.941% Ca-42: 0.647% Ca-43: 0.135% Ca-44: 2.086% Ca-46: 0.004% |
| 21 | Sc | Scandium | Sc-45: 100% |
| 22 | Ti | Titanium |
Ti-46: 8.2% Ti-47: 7.4% Ti-48: 73.8% Ti-49: 5.4% Ti-50: 5.2% |
| 23 | V | Vanadium | V-51: 99.750% |
| 24 | Cr | Chromium |
Cr-52: 83.79% Cr-53: 9.50% Cr-54: 2.36% |
| 25 | Mn | Manganese | Mn-55: 100% |
| 26 | Fe | Iron |
Fe-54: 5.8% Fe-56: 91.7% Fe-57: 2.2% Fe-58: 0.3% |
| 27 | Co | Cobalt | Co-59: 100% |
| 28 | Ni | Nickel |
Ni-58: 68.27% Ni-60: 26.10% Ni-61: 1.13% Ni-62: 3.59% Ni-64: 0.91% |
| 29 | Cu | Copper |
Cu-63: 69.17% Cu-65: 30.83% |
| 30 | Zn | Zinc |
Zn-64: 48.6% Zn-66: 27.9% Zn-67: 4.1% Zn-68: 18.8% |
| 31 | Ga | Gallium |
Ga-69: 60.1% Ga-71: 39.9% |
| 32 | Ge | Germanium |
Ge-70: 20.5% Ge-72: 27.4% Ge-73: 7.8% Ge-74: 36.5% Ge-76: 7.8% |
| 33 | As | Arsenic | As-75: 100% |
| 34 | Se | Selenium |
Se-74: 0.9% Se-76: 9.0% Se-77: 7.6% Se-78: 23.5% Se-80: 49.6% |
| 35 | Br | Bromine |
Br-79: 50.69% Br-81: 49.31% |
| 36 | Kr | Krypton |
Kr-80: 2.25% Kr-82: 11.6% Kr-83: 11.5% Kr-84: 57.0% Kr-86: 17.3% |
| 37 | Rb | Rubidium |
Rb-85: 72.17% |
| 38 | Sr | Strontium |
Sr-84: 0.56% Sr-86: 9.86% Sr-87: 7.00% Sr-88: 82.58% |
| 39 | Y | Yttrium | Y-89: 100% |
| 40 | Zr | Zirconium |
Zr-90: 51.45% Zr-91: 11.32% Zr-92: 17.19% Zr-94: 17.28% |
| 41 | Nb | Niobium | Nb-93: 100% |
| 42 | Mo | Molybdenum |
Mo-92: 14.84% Mo-94: 9.25% Mo-95: 15.92% Mo-96: 16.68% Mo-97: 9.55% Mo-98: 24.13% |
| 43 | Tc | Technetium | none |
| 44 | Ru | Ruthenium |
Ru-96: 5.52% Ru-98: 1.88% Ru-99: 12.7% Ru-100: 12.6% Ru-101: 17.0% Ru-102: 31.6% Ru-104: 18.7% |
| 45 | Rh | Rhodium | Rh-103: 100% |
| 46 | Pd | Palladium |
Pd-102: 1.020% Pd-104: 11.14% Pd-105: 22.33% Pd-106: 27.33% Pd-108: 26.46% Pd-110: 11.72% |
| 47 | Ag | Silver |
Ag-107: 51.83% Ag-109: 48.17% |
| 48 | Cd | Cadmium |
Cd-106: 1.25% Cd-108: 0.89% Cd-110: 12.51% Cd-111: 12.22% Cd-112: 24.13% Cd-114: 28.72% Cd-116: 7.47% |
| 49 | In | Indium |
In-113: 4.29% |
| 50 | Sn | Tin |
Sn-112: 0.97% Sn-114: 0.65% Sn-115: 0.34% Sn-116: 14.54% Sn-117: 7.68% Sn-118: 24.22% Sn-119: 8.58% Sn-120: 32.59% Sn-122: 4.63% Sn-124: 5.79% |
| 51 | Sb | Antimony |
Sb-121: 57.21% Sb-123: 42.79% |
| 52 | Te | Tellurium |
Te-120: 0.096% Te-122: 2.603% Te-124: 4.816% Te-125: 7.139% Te-126: 18.952% |
| 53 | I | Iodine | I-127: 100% |
| 54 | Xe | Xenon |
Xe-124: 0.10% Xe-126: 0.09% Xe-128: 1.91% Xe-129: 26.4% Xe-130: 4.1% Xe-131: 21.2% Xe-134: 10.4% Xe-136: 8.9% |
| 55 | Cs | Caesium | Cs-133: 100% |
| 56 | Ba | Barium |
Ba-130: 0.106% Ba-132: 0.101% Ba-134: 2.417% Ba-135: 6.592% Ba-136: 7.854% Ba-137: 11.23% Ba-138: 71.70% |
| 57 | La | Lanthanum | La-139: 99.91% |
| 58 | Ce | Cerium |
Ce-136: 0.19% Ce-138: 0.25% Ce-140: 88.48% |
| 59 | Pr | Praseodymium | Pr-141: 100% |
| 60 | Nd | Neodymium |
Nd-142: 27.13% Nd-143: 12.18% Nd-145: 8.30% Nd-146: 17.19% Nd-148: 5.76% |
| 61 | Pm | Promethium | none |
| 62 | Sm | Samarium |
Sm-144: 3.1% Sm-150: 7.4% Sm-152: 26.7% Sm-154: 22.7% |
| 63 | Eu | Europium |
Eu-151: 47.8% Eu-153: 52.2% |
| 64 | Gd | Gadolinium |
Gd-154: 2.18% Gd-155: 14.80% Gd-156: 20.47% Gd-157: 15.65% Gd-158: 24.84% Gd-160: 21.86% |
| 65 | Tb | Terbium | Tb-159: 100% |
| 66 | Dy | Dysprosium |
Dy-156: 0.06% Dy-158: 0.10% Dy-160: 2.34% Dy-161: 18.9% Dy-162: 25.5% Dy-163: 24.9% Dy-164: 28.2% |
| 67 | Ho | Holmium | Ho-165: 100% |
| 68 | Er | Erbium |
Er-162: 0.14% Er-164: 1.61% Er-166: 33.6% Er-167: 22.95% Er-168: 26.8% Er-170: 14.9% |
| 69 | Tm | Thulium | Tm-169: 100% |
| 70 | Yb | Ytterbium |
Yb-168: 0.13% Yb-170: 3.05% Yb-171: 14.3% Yb-172: 21.9% Yb-173: 16.12% Yb-174: 31.8% Yb-176: 12.7% |
| 71 | Lu | Lutetium |
Lu-175: 97.41% |
| 72 | Hf | Hafnium |
Hf-176: 5.2% Hf-177: 18.6% Hf-178: 27.1% Hf-179: 13.7% Hf-180: 35.2% |
| 73 | Ta | Tantalum | Ta-181: 99.988% |
| 74 | W | Tungsten |
W-180: 0.130% W-182: 26.30% W-186: 28.60% |
| 75 | Re | Rhenium |
Re-185: 37.40% |
| 76 | Os | Osmium |
Os-187: 1.6% Os-188: 13.3% Os-189: 16.1% Os-190: 26.4% Os-192: 41.0% |
| 77 | Ir | Iridium |
Ir-191: 37.3% Ir-193: 62.7% |
| 78 | Pt | Platinum |
Pt-192: 0.79% Pt-194: 32.9% Pt-195: 33.8% Pt-196: 25.3% Pt-198: 7.2% |
| 79 | Au | Gold | Au-197: 100% |
| 80 | Hg | Mercury |
Hg-196: 0.15% Hg-198: 10.10% Hg-199: 17.00% Hg-200: 23.10% Hg-201: 13.20% Hg-202: 29.65% Hg-204: 6.80% |
| 81 | Tl | Thallium |
Tl-203: 29.524% Tl-205: 70.476% |
| 82 | Pb | Lead |
Pb-206: 24.1% Pb-207: 22.1% Pb-208: 54.4% |
| 83 | Bi | Bismuth | Bi-209: 100% |
| 84 | Po | Polonium | none |
| 85 | At | Astatine | none |
| 86 | Rn | Radon | none |
| 87 | Fr | Francium | none |
| 88 | Ra | Radium | none |
| 89 | Ac | Actinium | none |
| 90 | Th | Thorium | none |
| 91 | Pa | Protactinium | none |
| 92 | U | Uranium | none |
| 93 | Np | Neptunium | none |
| 94 | Pu | Plutonium | none |
| 95 | Am | Americium | none |
| 96 | Cm | Curium | none |
| 97 | Bk | Berkelium | none |
| 98 | Cf | Californium | none |
| 99 | Es | Einsteinium | none |
| 100 | Fm | Fermium | none |
| 101 | Md | Mendelevium | none |
| 102 | No | Nobelium | none |
| 103 | Lr | Lawrencium | none |
| 104 | Rf | Rutherfordium | none |
| 105 | Db | Dubnium | none |
| 106 | Sg | Seaborgium | none |
| 107 | Bh | Bohrium | none |
| 108 | Hs | Hassium | none |
| 109 | Mt | Meitnerium | none |
| 110 | Unn | Unnunnilium | none |
| 111 | Unu | Unnununium | none |
| © B.M.Gammel, last change 18 Feb 1998 |