Good day, it is 14. 12. 2025, Sunday in 50. week.
Actinoids
| Atomic number | Name | Symbol | Electronegativity |
| 89 | Actinium | Ac | 1.1 |
| 90 | Thorium | Th | 1.3 |
| 91 | Protactinium | Pa | 1.5 |
| 92 | Uranium | U | 1.38 |
| 93 | Neptunium | Np | 1.36 |
| 94 | Plutonium | Pu | 1.28 |
| 95 | Americium | Am | 1.3 |
| 96 | Curium | Cm | 1.3 |
| 97 | Berkelium | Bk | 1.3 |
| 98 | Californium | Cf | 1.3 |
| 99 | Einsteinium | Es | 1.3 |
| 100 | Fermium | Fm | 1.3 |
| 101 | Mendelevium | Md | 1.3 |
| 102 | Nobelium | No | 1.3 |
| 103 | Lawrencium | Lr | 1.291 |
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