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There are 39 known isotopes of radon (86 Rn), from 193 Rn to 231 Rn; all are radioactive.The most stable isotope is 222 Rn with a half-life of 3.8235 days, which decays into 218 Po
Radon and its daughters are, taken together, often the single largest contributor to an individual's background radiation dose, but due to local differences in geology, [6] the level of exposure to radon gas differs by location. A common source of environmental radon is uranium-containing minerals in the ground; it therefore accumulates in ...
Reporting marks on two Canadian Pacific covered hopper cars; with the left car marked as CP 388686 and the right car marked as SOO 115239. A reporting mark is a code used to identify owners or lessees of rolling stock and other equipment used on certain rail transport networks.
If it is suspected that a private well or drinking water may be affected by radon, the National Radon Program Services Hotline at 1-800-SOS-RADON can be contacted for information regarding state radon office phone numbers. State radon offices can provide additional resources, such as local laboratories that can test water for radon. [109]
This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.
Formats for license plate numbers are consistent within the state. For example, Delaware is able to use six-digit all-numeric serials because of its low population. Several states, particularly those with higher populations, use seven-character formats of three letters and four digits, including 1ABC234 in California, 1234ABC in Kansas and ABC-1234 (with or without a space or dash) in Georgia ...
List of Lancia concept cars; List of Lexus vehicles; List of Indianapolis 500 pace cars; List of Lincoln vehicles; List of most expensive cars sold at auction; List of Stellantis vehicles; List of longest consumer road vehicles
The Live Chart of Nuclides – IAEA Color-map of fission product yields, and detailed data by click on a nuclide. Periodic Table with isotope decay chain displays. Click on element, and then isotope mass number to see the decay chain (link to uranium 235 ).