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Np
Neptunium
#93 · Actinide
| Mafuta | 237.04817 u |
| Kuomarara | 20.45 g/cm³ |
| Kutonhora | 917.0 K |
| Kutonhora | 4273.0 K |
| Electronegativity | 1.36 |
| Kutonhora | 604.5 kJ/mol |
| Atomic radius: | 155.0 pm |
| Block | f-block |
| State (RT) | _Kukanganisa: |
| Kugadzirisa | [Rn] 5f4 6d1 7s2 |