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The decay-chain of uranium-238, which contains radium-226 as an intermediate decay product. 226 Ra occurs in the decay chain of uranium-238 (238 U), 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 ...
This radiation is a small portion of the total emitted during radium 226 decay. Radium 228 emits beta particles, and is also a concern for human health through inhalation and ingestion. The gamma rays emitted from radium 226, accounting for 4% of the radiation, are harmful to humans with sufficient exposure.
226 Ra is the most stable isotope of radium and is the last isotope in the (4 n + 2) decay chain of uranium-238 with a half-life of over a millennium; it makes up almost all of natural radium. Its immediate decay product is the dense radioactive noble gas radon (specifically the isotope 222 Rn ), which is responsible for much of the danger of ...
Radon-222 (222 Rn, Rn-222, historically radium emanation or radon) is the most stable isotope of radon, with a half-life of approximately 3.8 days. It is transient in the decay chain of primordial uranium-238 and is the immediate decay product of radium-226.
Download as PDF; Printable version; In other projects ... 225 Ra, and 226 Ra. 217 Rn and 221 Rn are produced in rare branches in the decay chain of trace quantities ...
Radium (88 Ra) has no stable or nearly stable isotopes, and thus a standard atomic weight cannot be given. The longest lived, and most common, isotope of radium is 226 Ra with a half-life of 1600 years. 226 Ra occurs in the decay chain of 238 U (often referred to as the radium series). Radium has 34 known isotopes from 201 Ra to 234 Ra.
The decay chain of uranium-238, known as the uranium series or radium series, of which polonium-210 is a member Schematic of the final steps of the s-process.The red path represents the sequence of neutron captures; blue and cyan arrows represent beta decay, and the green arrow represents the alpha decay of 210 Po.
The decay chain from lead-212 down to lead-208, showing the intermediate decay products. In this example: 234 Th, 234m Pa,..., 206 Pb are the decay products of 238 U. 234 Th is the daughter of the parent 238 U. 234m Pa (234 metastable) is the granddaughter of 238 U. These might also be referred to as the daughter products of 238 U. [1] Decay ...