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Radioactive Decay | 42 mins | 0 completed | Learn |
Band of Stability | 22 mins | 0 completed | Learn |
Magic Numbers | 10 mins | 0 completed | Learn |
First Order Half Life | 19 mins | 0 completed | Learn |
Additional Practice |
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Alpha Decay |
Beta Decay |
Gamma Emission |
Electron Capture |
Positron Emission |
Nuclear Fission |
Mass Defect |
Nuclear Fusion |
Nuclear Transmutation |
Americium-241 is used in smoke detectors. It has a first order rate constant for radioactive decay of k = 1.6 10–3 yr–1. By contrast, iodine-125, which is used to test for thyroid functioning, has a rate constant for radioactive decay of k = 0.011 day–1.
What is the half-life of iodine-125?
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