Nuclei

Question: Radon (Ra) decays into Polonium (${P_0}$) by emitting an $\alpha - $ particle with half-life of 4 days. A sample contains $6.4 \times {10^{10}}$atoms of$Rn$. After 12 days, the number of atoms of ${R_n}$left in the sample will be

1) $3.2 \times {10^{10}}$

2) $0.53 \times {10^{10}}$

3) $2.1 \times {10^{10}}$

4) $0.8 \times {10^{10}}$

Solution:

Explanation: No Explanation

Radioactivity Modern Physics

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