Physics

Problem

_{88}^{226}\text{Ra}

undergoes two successive

\alpha

decays followed by one

\beta^-

decay. Which of the following is the final nuclide produced? a)

_{83}^{218}\text{Bi}

_{85}^{218}\text{At}

_{84}^{218}\text{Po}

_{85}^{222}\text{At}