U  7 a + 4 b +

1. Nuclear Equations • a) Write the missing symbol to complete this equation. • b) Write the missing symbol. Is this reaction fusion or fission? 208 4 U  a + ... 92 2 235 1 1 1 1 146 U + n  n + n + n + La + ... 92 0 0 0 0 57 2) Write equations for the alpha decay for each of these isotopes (Q1a is also alpha decay). a) b) c) d) 222 208 Ra Ra 88 84 185 185 Au Pt 79 78 3) Write equations for the beta decay for each of these isotopes. a) b) c) d) 6 24 He Na 2 11 42 201 K Au 19 79 4) Uranium-235 undergoes a decay series in which seven alpha and four beta particles are released. What is the symbol of the final element formed? 235 4 0 U  7 a + 4 b + 92 2 -1 1 5) A sequence of fusion reactions is shown. Write an equation for each reaction. The first one has been done for you. A) B) C) p 1 1 p 3 1 He 2 1 p 2 H 1 (Reaction B) 1 1 1 2 4 H + H  H (Reaction A) He 2 1 1 1 (Reaction C) 1 p 1 3 He 1 2 p 1