Nuclear Decay

1 An alpha particle is an electron a positron a Helium nucleus the first one to come out 2 A beta particle is an electron a positron a Helium nucleus the second to come out 3 A gamma ray is an electron a Helium nucleus an energetic ray of invisible light  the 3rd to come out 4 Which types of decay will cause no decrease in the atomic mass of a nuclei? alpha, beta, and gamma beta, positron and gamma alpha and gamma positron emission only 5 In the reaction shown below what particle is represented by the X? 81Tl209 82Pb209 + X alpha beta positron gamma 6 In the reaction shown below what particle is represented by the X? 37Rb81 36Kr81 + X alpha beta positron gamma 7 In the reaction shown below what particle is represented by the X? 84Po212 82Pb208 + X  alpha beta positron gamma 8 What kind of decay is shown by this equation? 37Rb81+ -1e0 36Kr81 alpha decay beta decay positron emission electron capture 9 What atom is produced if 53I131 undergoes beta decay? 52Te131 54Xe131 51Sb128 55Cs135 10 An amateur scientist tells you he has a stable atom of 84Po212, why is that unlikely? No atoms are stable. Amateur scientists don't know anything. There are no stable nuclei with more than 83 protons. Male scientists can't be trusted.