84Po210 (half-life= 138.4 days) undergoes α- decay to form 82Pb206. I – InterviewSolution

1.	84Po210 (half-life= 138.4 days) undergoes α- decay to form 82Pb206. If 2.1 g of 84Po210 is placed in a sealed tube, what volume (in mL) of helium will accumulate in 69.2 days at STP?(take √2=1.4).
Answer» $_{84} P o^{210}$ (half-life= 138.4 days) undergoes $α$ - decay to form $_{82} P b^{206}$ . If 2.1 g of $_{84} P o^{210}$ is placed in a sealed tube, what volume (in mL) of helium will accumulate in 69.2 days at STP?(take $\sqrt{2}$ =1.4).

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