Np
Neptunium
Zosankha 93 · 237.04817 u
Neptunium ndi chinthu choyamba chodziwika bwino cha transuranium.
Zochita za Fiziki
| Mafuta | 237.04817 u |
| Kuwala | 20.45 g/cm³ |
| Kutentha | 917.0 K |
| Kutentha | 4273.0 K |
| Kuoneka | Silvery metallic |
| State at Room Temp | M'gululi |
Makhalidwe a Chemical
| Electronegativity | 1.36 (Pauling) |
| 1st Ionization Energy | 604.5 kJ/mol |
| Electron Affinity | 45.85 kJ/mol |
| Oxygen | +3, +4, +5, +6, +7 |
Zosankha
| Kusintha kwa ma electron | [Rn] 5f4 6d1 7s2 |
| Atomic radius | 155.0 pm |
| Kuwala kwa Van der Waals | 221.0 pm |
Kupeza
| Kupezeka ndi | Edwin McMillan, Philip Abelson |
| Kuzindikira chaka | 1940 |
| Malo | Berkeley, California, United States |
| Analimbikitsidwa ndi | Amatchedwanso uranium |
Za ine Neptunium
Neptunium ndi chitsulo cha radioactive actinide ndi choyamba transuranium element chomwe chimapangidwa ngati chida chamagetsi cha nuclear.
Kugwiritsa ntchito & Maphunziro
Kuzindikira kwa neutron, woyamba kwa plutonium-238 (zoyeserera zakunja), ndi kafukufuku wa nyukiliya.
Fun Facts
Neptunium anali woyamba synthesized transuranium chinthu, kutsegulira m'mphepete mwa zonse zolemera zinthu.
Isotopes
| Kukula kwa maselo | Kuchuluka | Half-Life | Wolimba |
| 236 | - | 154,000 years | Si |
| 237 | - | 2.144 million years | Si |
Kusintha kwa ma electron
[Rn] 5f4 6d1 7s2