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I suppose that you think to the radioactive isotope Cs-17; After 4 years remain 9,122 g.
After 6 half lives, the remaining will be (1/2)6 i.e 1/64 th of the initial amount. Hence by percentage it would be 1.5625 %
not sure you're asking exactly but I think the answer your looking for is radioactive half-life
The length of time required for half of a sample of radioactive material to decay
5g would remain
Approx 1/8 will remain.
100 grams
I suppose that you think to the radioactive isotope Cs-17; After 4 years remain 9,122 g.
100 grams
It disintegrates into its daughter nuclei that are much more stabler than the radioactive nuclei. If a sample of radioacictive material is left it will decay into another element over a period of time. Note that complete decay is not possible. A fraction of the original radioactive material will always remain in the sample.
The sample must contain radioactive elements.
Approx. 313 grams
The length of time required for half of a sample of radioactive material to decay
It tells what fraction of a radioactive sample remains after a certain length of time.
Yes, and the question is ... ?
i got no idea
Not sure what you mean by "had-lives". After 3 half lives, approx 1/8 would remain.