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1. What element is radioactive?
A
Tc: 43 Technetium 98
B
Tl: 81 Thallium 204.38
C
Tm: 69 Thulium 168.93
2. What element is radioactive?
A
F: 9 Fluorine 18.998
B
Fe: 26 Iron 55.845
C
Fr: 87 Francium 223
3. What element is radioactive?
A
Rb: 37 Rubidium 85.465
B
Ra: 88 Radium 226
C
Ru: 44 Ruthenium 101.07
4. What element is radioactive?
A
Dy: 66 Dysprosium 162.50
B
Db: 105 Dubnium 268
C
Eu: 63 Europium 151.96
5. What element is radioactive?
A
Sg: 106 Seaborgium 271
B
Se: 34 Selenium 78.96
C
Sc: 21 Scandium 44.956
6. What element is radioactive?
A
Bh: 107 Bohrium 272
B
Bi: 83 Bismuth 208.98
C
B: 5 Boron 10.811
7. What element is radioactive?
A
Hs: 108 Hassium 277
B
Ho: 67 Holmium 164.93
C
Hf: 72 Hafnium 178.49
8. What element is radioactive?
A
Mt: 109 Meitnerium 276
B
Mg: 12 Magnesium 24.305
C
Mn: 25 Manganese 54.938
9. What element is radioactive?
A
Ds: 110 Darmstadtium 281
B
Dy: 66 Dysprosium 162.50
C
Eu: 63 Europium 151.96
10. What element is radioactive?
A
Rg: 111 Roentgenium 280
B
Rb: 37 Rubidium 85.468
C
Ru: 44 Ruthenium 101.07
11. What element is radioactive?
A
Cs: 55 Caesium 132.91
B
Ce: 58 Cerium 140.12
C
Cn: 112 Copernicium 285
12. What element is radioactive?
A
Nh: 113 Nihonium 284
B
Na: 11 Sodium 22.990
C
Ne: 10 Neon 20.180
13. What element is radioactive?
A
F: 9 Fluorine 18.998
B
Fl: 114 Flerovium 289
C
Fe: 26 Iron 55.845
14. What element is radioactive?
A
Mn: 25 Manganese 54.938
B
Mo: 42 Molybdenum 95.96
C
Mc: 115 Moscovium 288
15. What element is radioactive?
A
Lu: 71 Lutetium 174.97
B
La: 57 Lanthanium 138.91
C
Lv: 116 Livermorium 292
16. What element is radioactive?
A
Ta: 73 Tantalum 180.95
B
Ts: 117 Tennessine 294
C
Te: 52 Tellurium 127.60
17. What element is radioactive?
A
Og: 118 Oganesson 294
B
Os: 76 Osmium 190.23
C
O: 8 Oxygen 15.999
18. What element is radioactive?
A
Po: 84 Polonium 209
B
Pd: 46 Palladium 106.42
C
Pt: 78 Platinum 195.08
19. What element is radioactive?
A
As: 33 Arsenic 74.922
B
At: 85 Astatine 210
C
Ar: 18 Argon 39.948
20. What element is radioactive?
A
Rn: 86 Radon 222
B
Rb: 37 Rubidium 85.468
C
Ru: 44 Ruthenium 101.07
21. What element is radioactive?
A
Al: 13 Aluminium 26.982
B
Ac: 89 Actinium 227
C
Ag: 47 Silver 107.87
22. What element is radioactive?
A
Th: 90 Thorium 232.04
B
Tm: 69 Thulium 168.93
C
Tb: 65 Terbium 158.93
23. What element is radioactive?
A
Pt: 78 Platinum 195.08
B
Pa: 91 Protactinium 231.04
C
Pd: 46 Palladium 106.42
24. What element is radioactive?
A
U: 92 Uranium 238.03
B
V: 23 Vanadium 50.942
C
W: 74 Tungsten 183.84
25. What element is radioactive?
A
Np: 93 Neptunium 237
B
No: 102 Nobelium 259
C
Na: 11 Sodium 22.990
26. What element is radioactive?
A
Pd: 46 Palladium 106.42
B
Pt: 78 Plutonium 195.08
C
Pu: 94 Plutonium 244
27. What element is radioactive?
A
As: 33 Arsenic 74.922
B
Am: 95 Americium 243
C
Au: 79 Gold 196.97
28. What element is radioactive?
A
Cm: 96 Curium 247
B
Ce: 58 Cerium 140.12
C
Cs: 55 Caesium 132.91
29. What element is radioactive?
A
Bk: 97 Berkelium 247
B
Bi: 83 Bismuth 208.98
C
B: 5 Boron 10.811
30. What element is radioactive?
A
Ce: 58 Cerium 140.12
B
Cf: 98 Californium 251
C
Cn: 112 Copernicium 285
31. What element is radioactive?
A
Es: 99 Einsteinium 252
B
Eu: 63 Europium 151.96
C
Er: 68 Erbium 167.26
32. What element is radioactive?
A
Fm: 100 Fermium 257
B
Fe: 26 Iron 55.845
C
F: 9 Fluorine 18.998
33. What element is radioactive?
A
Md: 101 Mendelevium 258
B
Mg: 12 Magnesium 24.305
C
Mn: 25 Manganese 54.938
34. What element is radioactive?
A
Nb: 41 Niobium 92.906
B
Na: 11 Sodium 22.990
C
No: 102 Nobelium 259
35. What element is radioactive?
A
Li: 3 Lithium 6.941
B
La: 57 Lanthanium 138.91
C
Lr: 103 Lawrencium 262
36. What element is radioactive?
A
Pt: 78 Platinum 195.08
B
Pm: 61 Promethium 145
C
Pd: 46 Palladium 106.42
37. What element is radioactive?
A
Rf: 104 Rutherfordium 267
B
Rb: 37 Rubidium 85.468
C
Ru: 44 Ruthenium 101.07