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In a 10 mg sample of 226Ra   (a) How long will it take for 1 mg...

In a 10 mg sample of 226Ra  

(a) How long will it take for 1 mg 226Ra to decay?

(b) What is the maximum activity of 222Rn?

226Ra; T1/2= 1620 y; 222Rn; T1/2= 3.82 d   

Science   Advanced-Physics   
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