Radioactive Decay Problems #1
1. What is the mass number of Radium-226?
226
2. What is the atomic number of Radium-226?
88
3. What is the correct symbol for Radium-226?
Ra
Radium-226 undergoes alpha decay.
4. What is the mass number of the new isotope?
222
5. What is the atomic number of the new isotope?
86
6. What is the correct symbol for the new isotope?
Rn
7. What is the name of the new isotope?
Radon-222
8. What is the mass number of Thorium-234?
234
9. What is the atomic number of Thorium-234?
90
10. What is the correct symbol for Thorium-234?
Th
Thorium-234 undergoes beta decay.
11. What is the mass number of the new isotope?
234
12. What is the atomic number of the new isotope?
91
13. What is the correct symbol for the new isotope?
Pa
14. What is the name of the new isotope?
Protactinium- 234
15. What is the mass number of Plutonium-238?
238
16. What is the atomic number of Plutonium-238?
94
17. What is the correct symbol for Plutonium-238?
Pu
Plutonium-238 undergoes alpha decay.
18. What is the mass number of the new isotope?
234
19. What is the atomic number of the new isotope?
92
20. What is the correct symbol for the new isotope?
U
21. What is the name of the new isotope?
Uranium-234
22. What is the mass number of Bismuth-210?
210
23. What is the atomic number of Bismuth-210?
83
24. What is the correct symbol for Bismuth-210?
Bi
Bismuth-210 undergoes beta decay.
25. What is the mass number of the new isotope?
210
26. What is the atomic number of the new isotope?
84
27. What is the correct symbol for the new isotope?
Po
28. What is the name of the new isotope?
Polonium-210
29. What is the mass number of Uranium-234?
234
30. What is the atomic number of Uranium-234?
92
31. What is the correct symbol for Uranium-234?
U
Uranium-234 undergoes alpha decay.
32. What is the mass number of the new isotope?
230
33. What is the atomic number of the new isotope?
90
34. What is the correct symbol for the new isotope?
Th
35. What is the name of the new isotope?
Thorium-230
36. What is the mass number of Cesium-137?
137
37. What is the atomic number of Cesium-137?
55
38. What is the correct symbol for Cesium-137?
Cs
Cesium-137 undergoes beta decay.
39. What is the mass number of the new isotope?
137
40. What is the atomic number of the new isotope?
56
41. What is the correct symbol for the new isotope?
Ba
42. What is the name of the new isotope?
Barium-137
43. What is the mass number of Polonium-214?
214
44. What is the atomic number of Polonium-214?
84
45. What is the correct symbol for Polonium-214?
Po
Polonium-214 undergoes alpha decay.
46. What is the mass number of the new isotope?
210
47. What is the atomic number of the new isotope?
82
48. What is the correct symbol for the new isotope?
Pb
49. What is the name of the new isotope?
Lead-210
50. What is the mass number of Protactinium-234?
234
51. What is the atomic number of Protactinium-234?
91
52. What is the correct symbol for Protactinium-234?
Pa
Protactinium- 234 undergoes beta decay.
53. What is the mass number of the new isotope?
234
54. What is the atomic number of the new isotope?
92
55. What is the correct symbol for the new isotope?
U
56. What is the name of the new isotope?
Uranium-234