| 11. | Both are a part of the natural uranium decay chain.
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| 12. | They give off a total of about 24 MeV from their respective decay chains.
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| 13. | Bismuth-213 is also found on the decay chain of uranium-233.
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| 14. | These series represent the decay chain products of long-lived primordial U-238, U-235, and Th-232, respectively.
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| 15. | Radon is formed as part of the normal radioactive decay chain of uranium and thorium.
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| 16. | The sum of these two terms gives the law for a decay chain for two nuclides:
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| 17. | These names were used at the time when the decay chains were first discovered and investigated.
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| 18. | It couldn't find any of the decay chains Ninov claimed were in the original raw data.
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| 19. | The previous equation cannot be applied to the decay chain, but can be generalized as follows.
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| 20. | In many cases members of the decay chain are far more radioactive than the original nuclide.
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