Essential Facts
| Atomic number | 93 |
| Name | Neptunium |
| Symbol | Np |
| Atomic mass | 237 |
| Classification | Actinide |
| State at 20°C | Synthetic |
| Melting point | 640°C |
| Boiling point | 3902°C |
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Neptunium (Np)Essential Facts
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Copyright © 2008-2012 Gary Wallace - All Rights Reserved |
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