| 1 | But was pulls out empties entire heart to love your actinium. | |
| 2 | All are radioactive and have similar properties to actinium. | |
| 3 | Note3: Actinide abundance ratios may be applied to measurements of stellar ages. | |
| 4 | Discovery of element actinium by French chemist Andr...-Louis Debierne. | |
| 5 | The distribution ratios of actinides are very low when aqueous phase is nitric acid. |