Neptunium series
| Neptunium-237 (α, 2.14 × 106 a) | |
| Protactinium-233 (β−, 27.0 d) | |
| Uranium-233 (α, 1.592 × 105 a) | |
| Thorium-229 (α, 7340 a) | |
| Radium-225 (β−, 14.9 d) | |
| Actinium-225 (α, 10.0 d) | |
| Francium-221 (α, 4.8 min) | |
| Astatine-217 (α, 32 ms) | |
| Bismuth-213 (46.5 min) | |
| β−, 97.80% | α, 2.20% |
| Polonium-213 (α, 3.72 µs) |
Thallium-209 (β−, 2.2 min) |
| Lead-209 (β−, 3.25 h) | |
| Bismuth-209 (α, 1.9 × 1019 a) | |
| Thallium-205 (STABLE) | |
The neptunium series is a decay chain.
References
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