The 235(top)92(bottom)U nucleus naturally decays through a series of steps and ends with the formation of the stable 207(top)82(bottom)Pb.

The 235(top)92(bottom)U nucleus naturally decays through a series of steps and ends with the formation of the stable 207(top)82(bottom)Pb. The decays proceed through a series of alpha particle and beta particle emissions. How many of each type of particle is emitted in the series of radioactive decay?