|
Radioactive Decay |
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|
The Actinium Series |
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|
Element |
Atomic Weight |
Radiation Emitted |
Half Life |
||||
|
Uranium |
235 |
a |
7.13E+08 |
Years |
|||
|
Thorium |
231 |
b |
25.6 |
Hours |
|||
|
Protactinium |
231 |
a |
3.43E+04 |
Years |
|||
|
Actinium |
227 |
b |
98.80% |
a |
1.20% |
21.8 |
Years |
|
Thorium |
227 |
a |
18.4 |
Days |
|||
|
Francium |
223 |
b |
21 |
Minutes |
|||
|
Radium |
233 |
a |
11.7 |
Days |
|||
|
Radon |
219 |
a |
3.92 |
Seconds |
|||
|
Polonium |
215 |
a |
1.83E-03 |
Seconds |
|||
|
Lead |
211 |
b |
36.1 |
Minutes |
|||
|
Astatine |
515 |
a |
1.00E-04 |
Seconds |
|||
|
Bismuth |
211 |
a |
99.70% |
b |
0.30% |
2.16 |
Minutes |
|
Polonium |
211 |
a |
b |
5.00E-06 |
0.52 |
Seconds |
|
|
Thallium |
207 |
b |
4.78 |
Seconds |
|||
|
Lead |
207 |
Stable |
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