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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 ...
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.
2.1 fluorine-23: 2.23 oxygen-22: 2.25 nobelium-252: 2.27 rutherfordium-255: 2.3 rutherfordium-262: 2.3 carbon-15: 2.449 radium-214: 2.46 rutherfordium-259m: 2.5 francium-204m1: 2.6 radium-213: 2.74 polonium-207m3: 2.79 nobelium-256: 2.91 bismuth-193m: 3.2 rutherfordium-259: 3.2 oxygen-21: 3.42 astatine-200m2: 3.5 radium-210: 3.7 francium-205: 3 ...
204 Pb is the only non-radiogenic lead isotope, therefore is not one of the daughter isotopes. These daughter isotopes are the final decay products of U and Th radioactive decay chains beginning from 238 U (half-life 4.5 Gy), 235 U (half-life 0.70 Gy) and 232 Th (half-life 14 Gy) respectively. With the progress of time, the final decay product ...
Radon-222 itself alpha decays to polonium-218 with a half-life of approximately 3.82 days, making it the most stable isotope of radon. [1] Its final decay product is stable lead-206 . In theory, 222 Rn is capable of double beta decay to 222 Ra, and depending on the mass measurement, single beta decay to 222 Fr may also be allowed.
The uranium-238 series is a series of α (N and Z less 2) and β− decays (N less 1, Z plus 1) to nuclides that are successively deeper into the valley of stability. The series terminates at lead-206, a stable nuclide at the bottom of the valley of stability. Radioactive decay often proceeds via a sequence of steps known as a decay chain.
), which is the most common naturally occurring isotope of uranium. It undergoes alpha decay to radon-222, which is also radioactive; the decay chain ultimately terminates at lead-206. Because of its occurrence in the 238 U decay chain, 226 Ra exists naturally at low concentrations in uranium-containing minerals, soil, and groundwater. [3]
The single-row parameters, commented "!"=could be required; ..1 – 4 refer to the decay mode dm#= {{Isotopes/main/isotope | mn =! massnumber | sym =! symbol | link = isotope page: uranium-232 | ref = reference for the isotope-row | na =! natural abundancy (can be: synth, trace) | hl =! half-life (can be: stable) | dm1 =! decay mode #1 ...