Question: Radon ? 8 6 2 2 2 R n is a radioactive gas with a half - life of 3 . 8 2 d .

Radon ?86222Rn is a radioactive gas with a half-life of 3.82 d . If there are initially 380 decays ?s in a sample, how many radon nuclei are left after 3d?
Radon ? 8 6 2 2 2 R n is a radioactive gas with a

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