| Z | 93 |
|---|---|
| Symbol | Np |
| Name | Neptunium |
| Periode | 7 |
| Atommasse Scalar | [237] |
| Dichte Scalar | 20450 |
| Schmelzpunkt Scalar | 913.15 |
| Siedepunkt Scalar | 4273 |
| Elektronegativität Scalar | 1.36 |
| Häufigkeit | <0.001 |
| Ionisationsenergie Scalar | 6.2657 |
| Atomradius Scalar | 175 |
| Elektronenkonfiguration | [Rn] 5f4 6d1 7s2 |
| English name | Neptunium |
| oberer Nachbar | Pm |
| linker Nachbar | U |
| rechter Nachbar | Pu |
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