Radon gas, 22286Rn, is considered a serious health hazard. It decays by -emissio

4.3
Radon gas, 22286Rn, is considered a serious health hazard. It decays by -emissio

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Radon gas, 22286Rn, is considered a serious health hazard. It decays by -emission.

(a) What is the daughter nucleus?

(b) Is the daughter nucleus stable or radioactive? If the latter, how does it decay, and what is its half-life? See Figure below

(c) Is the daughter nucleus also a noble gas, or is it chemically reactive?

(d) Suppose 1.4 ng of 22286Rn seeps into a basement. What will be its activity? If the basement is then sealed, what will be the activity 1 month later?