JEE PHYSICS MCQ: NUCLEI

Radioactive decay will occur as follows

$\begin{aligned} & { }_{86}^{22} {Rn} \rightarrow{ }_{84}^{216} {PO}+{ }_2^5 {He} \text { half life }=55 {~s} \\ & { }_{84}^{216} {Po} \rightarrow{ }^{212} {~Pb}+{ }_2^4 {He} \text { half life }=0.66 {~s} \\ & { }_{82}^{82} {~Pb} \rightarrow{ }_{82}^{212} {BL}+\lambda^{\circ} e \text { Half life }=10.6 {~h} \end{aligned}$

If a certain mass of radon $({Rn}=220)$ is allowed to decay in a certain container; then after 5 minutes the element with the greater mass will be