WebbThe actinide (/ ˈ æ k t ɪ n aɪ d /) or actinoid (/ ˈ æ k t ɪ n ɔɪ d /) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium.The actinide series derives its name from the first element in the series, actinium. The informal chemical symbol An is used in general discussions of actinide … Webb29 nov. 2024 · Solution For The radioactive decay constant of 3890 Sr is 7.88×10−10 s−1. The activity of 15mg of this isotope will be
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WebbThe radioactive decay constant of 3890Sris7.88×10 −10s −1. The activity of 15 mg of this isotope will be. A 1.5Ci B 2.13×10 3Ci C 7.88Ci D 8.76ci Medium Solution Verified by Toppr Correct option is B) Moles n= 90gm/mole15gm = 61mole where 90 is the mass number Number of Nuclei N=nN a= 66.023×10 23=1.004×10 23 WebbRadioactive decay usually produces radiation particles (α, β) or photons (γ) that can be detected with some probability. Under favorable conditions, the observed activity A′ thus … humble under the lights
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Webb23 feb. 2024 · The half life of a radioactive sample 38 Sr 90 is 2 years. Calculate the rate of disintegration of 15 mg of this isotope. Given Avogadro number = 6.023 x 10 23. class … WebbThe activity of a sample of 31Si (T1/2 = 9.43 103 s) is 7.88 105 decays per second. What is the mass of sample present? The activity of a sample containing radioactive {108}Ag is 6.4 x 10^4... Webb1 mars 2024 · The early estimates for the decay constant of 87 Rb were derived from the inter-comparison of U–Pb and Rb–Sr dates of rapidly cooled igneous rocks. Using this … holly couture