234 222 39. The transmutation of a radioactive uranium isotope, 92U, into a radon isotope, 206 Rn, involves a series of three nuclear reactions. At the end of the first reaction, a thorium isotope, 90 330 Th, is formed 226 230. and at the end of the second reaction, a radium isotope, Ra, is formed. In both the reactions, an alpha particle is emitted. Write the balanced equations for the three successive nuclear reactions. Please show all work. (ref: p.808-813)