Chemistry - Chemical Kinetics Question with Solution | TestHub

Rn is a radiactive and its produced by the decay of radium and thorium mineral
${\mathrm{}}_{88}^{226}\mathrm{R}\mathrm{a}{\to }_{86}^{222}\mathrm{R}\mathrm{n}{+}_2^4\mathrm{H}\mathrm{e}$
It is a$\mathrm{\gamma }$-emitter.