Chemistry - Chemical Kinetics Question with Solution | TestHub

Which elements are isotopes of each other in the above sequence of reaction?
$\mathrm{X}\stackrel{-\mathrm{\alpha }}{\to }\mathrm{Y}\stackrel{-\mathrm{\beta }}{\to }\mathrm{Z}\stackrel{-\mathrm{\beta }}{\to }\mathrm{W}$