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Lead (82 Pb) has four observationally stable isotopes: 204 Pb, 206 Pb, 207 Pb, 208 Pb. Lead-204 is entirely a primordial nuclide and is not a radiogenic nuclide.The three isotopes lead-206, lead-207, and lead-208 represent the ends of three decay chains: the uranium series (or radium series), the actinium series, and the thorium series, respectively; a fourth decay chain, the neptunium series ...
Main isotopes [1] Decay; abundance half-life (t 1/2) mode product; 202 Pb : synth: 5.25 × 10 4 y: ε: 202 Tl: 204 Pb : 1.40% stable: 205 Pb : trace: 1.73 × 10 7 y: ε: 205 Tl: 206 Pb : 24.1% stable 207 Pb : 22.1% ...
25.3 1.52 einsteinium-256: 25.4 1.52 radon-221: 25.7 1.54 americium-244m: 26 1.6 uranium-235m: 26 1.6 astatine-205: 26.2 1.57 lead-214: 26.8 1.61 mendelevium-255: 27 1.6 bismuth-199: 27 1.6 einsteinium-248: 27 1.6 mendelevium-254m: 28 1.7 radon-209: 28.5 1.71 fermium-250: 30.4 1.82 thorium-226: 30.57 1.834 astatine-206: 30.6 1.84 bismuth-200m1 ...
Natural lead consists of four stable isotopes with mass numbers of 204, 206, 207, and 208, [38] and traces of six short-lived radioisotopes with mass numbers 209–214 inclusive. The high number of isotopes is consistent with lead's atomic number being even.
Thus, the only sources of lead in a zircon crystal are through decay of uranium and thorium. Both the uranium-235 and uranium-238 series decay into an isotope of lead. The half-life of converting 235 U to 207 Pb is 710 million years, and the half-life of converting 238 U to 206 Pb is 4.47 billion years. Because of high resolution mass ...
Pages in category "Isotopes of lead" The following 105 pages are in this category, out of 105 total. ... Lead-206; Lead-206m1; Lead-206m2; Lead-207; Lead-207m; Lead ...
A further 10 nuclides, platinum-190, samarium-147, lanthanum-138, rubidium-87, rhenium-187, lutetium-176, thorium-232, uranium-238, potassium-40, and uranium-235 have half-lives between 7.0 × 10 8 and 4.83 × 10 11 years, which means they have experienced at least 0.5% depletion since the formation of the Solar System about 4.6 × 10 9 years ...
9 elements have 4 stable isotopes apiece; 5 elements have 3 stable isotopes apiece; 16 elements have 2 stable isotopes apiece; 26 elements have 1 single stable isotope. These last 26 are thus called monoisotopic elements. [3] The mean number of stable isotopes for elements which have at least one stable isotope is 251/80 = 3.1375.