Notes
| Isotopes of Radium |
| Notes
|
| Ra-224, Ra-226 and Ra-228 are all generated in the decay of either Uranium or Thorium. |
| Radium is over one million times more radioactive than the same mass of uranium. Radium loses about 1% of its activity in 25 years, being transformed into elements of lower atomic weight with lead being the final product of disintegration. |
 Notable Isotopes  |
 223Ra [135 neutrons] |
 Abundance: ?
|
| Half life: 11.43 days [ Alpha Decay ]
|
| Decay Energy: 5.99 MeV |
| Decays to 219Rn.
|
| 224Ra [136 neutrons] |
| Abundance: ?
|
| Half life: 3.6319 days [ Alpha Decay ]
|
| Decay Energy: 5.789 MeV |
| Decays to 220Rn.
|
| 226Ra [138 neutrons] |
| Abundance: trace
|
| Half life: 1602 years [ Alpha Decay ]
|
| Decay Energy: 4.871 MeV |
| Decays to 222Rn.
|
| 228Ra [140 neutrons] |
| Abundance: Synthetic
|
| Half life: 6.7 years [ beta- ]
|
| Decay Energy: 0.046 MeV |
| Decays to 228Ac.
|