Question

17. When francium 223 87 Fr undergoes alpha decay, what daughter nucleus is produced? 222 A) Rn 86 B) 233 Ra 88 C) 221 Ро 84 219 D) At 85 E) 221 At 85 18. When krypton 89 Kr undergoes betat decay, what daughter nucleus is produced? 36 89 85 88 89 B) Br C) Se D) Sr E) Rb 35 34 38 37 A) 88 Rb 37 236 19. Which one of the following occurs when Ra undergoes beta decay? 88 A) The mass of the nucleus increases. B) The mass of the nucleus decreases. C) The atomic number increases. D) The atomic number decreases. E) The number of electrons decreases. I 20. What are the products of a gamma decay process? A) a daughter nucleus, an electron, and a neutrino B) a daughter nucleus and a helium nucleus C) the original nucleus at a lower energy state and a photon D) two daughter nuclei and neutrons E) a daughter nucleus, a positron, and a neutrino

Answer 1

223 219 (223-4 219 17) Foro -& At = At 87 (87-2) 85 Daughter nudeus is preoduce ① & At 89 89 - 187 For ß dicey ko R6= 8 Rb (36+1 Daughter nudeus is 089 Rb 36 37 37 one 191 for B decey atomic number s's In Greases so answer is > The atomic number increases. gamma decey process → © The Osuginal nudeus at lower energy state and a photon.