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Radon (Ra) decays into Polonium (P0) by ...

Radon `(Ra)` decays into Polonium `(P_0)` by emitting an `alpha-`particle with half-life of `4` days. A sample contains `6.4 xx 10^10` atoms of `R_n`. After `12` days, the number of atoms of `R_n` left in the sample will be

A

`3.2xx10^(10)`

B

`0.53xx10^(10)`

C

`2.1xx10^(10)`

D

`0.8xx10^(10)`

Text Solution

Verified by Experts

The correct Answer is:
D
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