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Chemical elements
chemical elementsactiniumlawrenciumperiodic tableatomic numbersradioactiveUraniumthorium
Actinide
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Location of actinides on the periodic table
The actinide series is the 15 chemical elements between actinium and lawrencium on the periodic table. They have the atomic numbers between 89 - 103. The actinide series is named after actinium. All of the elements are radioactive. Uranium is the most common natural actinide, and thorium second.
The actinide elements |
Atomic Number | Name | Symbol | Picture |
|---|---|---|---|
| 89 | Actinium | Ac | − |
| 90 | Thorium | Th |  |
| 91 | Protactinium | Pa | − |
| 92 | Uranium | U |  |
| 93 | Neptunium | Np |  |
| 94 | Plutonium | Pu |  |
| 95 | Americium | Am |  |
| 96 | Curium | Cm | − |
| 97 | Berkelium | Bk |  |
| 98 | Californium | Cf |  |
| 99 | Einsteinium | Es |  |
| 100 | Fermium | Fm | − |
| 101 | Mendelevium | Md | − |
| 102 | Nobelium | No | − |
| 103 | Lawrencium | Lr | − |
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