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Half-life period of Neptunium (Np) |
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| Find half-life period of radioactive isotopes of different elements; find its decay type and list of particle emitted. Half-life is the time required for a quantity of radioactive element to reduce to half of its initial value. |
Half-life period of Neptunium (Np)
| Element | Mass | Symbol | Decay Type | Half-Life |
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| Neptunium | 235 | 235Np | Electron capture (e), Alpha decay (a) | 396.1 days | | Neptunium | 236 | 236Np | Electron capture (e), Alpha decay (a), Beta decay | 154,000 years | | Neptunium | 237 | 237Np | Alpha decay (a) | 2.1444 million years | | Neptunium | 238 | 238Np | | 2.117 days | | Neptunium | 239 | 239Np | Beta decay | 2.356 days | | Neptunium | 240 | 240Np | | 65 minutes | | Neptunium | 240m | 240mNp | | 7.4 minutes |
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