Np
Neptunium
Chikamu 93 · 237.04817 u
Actinide
f-block
Chikamu 7
_Kukanganisa: at RT
Radioactive
t½ 2.144 million years
Synthetic
Wikipedia →
Neptunium yaive yekutanga transuranium element yakawanikwa.
Maitiro ekushandisa
| Atomic radius: | 237.04817 u |
| Kuomarara | 20.45 g/cm³ |
| Kutonhora Point | 917.0 K |
| Kutonhora Point | 4273.0 K |
| Kuoneka | Silvery metallic |
| State at Room Temp | _Kukanganisa: |
Chemical zvinhu
| Electronegativity | 1.36 (Pauling) |
| 1st Ionization Energy | 604.5 kJ/mol |
| Electronegativity: | 45.85 kJ/mol |
| Oxygen | +3, +4, +5, +6, +7 |
Atomic Properties
| Kuisa Kugadzirisa | [Rn] 5f4 6d1 7s2 |
| Atomic radius: | 155.0 pm |
| Van der Waals radius | 221.0 pm |
Discovery
| Yakawanikwa ne | Edwin McMillan, Philip Abelson |
| Kuonekwa kwegore | 1940 |
| _Panzvimbo: | Berkeley, California, USA |
| Akapihwa zita mushure me | Inozivikanwa nezita rekuti Neptune, zvichibva pazita renyika yeNeptune. |
Nezve Neptunium
Neptunium (Np) inonziwo neptuni, inonziwo neptunium-239, inonziwo neptunium-239b, inonziwo neptunium-239c, inonziwo neptunium-239d, inonziwo neptunium-239d, inonziwo neptunium-239d.
Mashandisiro & Maapplication
Neutron detection, precursor ye plutonium-238 (space probes), uye nuclear research.
Nhoroondo yemitambo
Neptunium yaive yekutanga transuranium element yakagadzirwa nevanhu, ichivhura nzira kune ese maelementi akakura.
Isotopes
| Mamwe marudzi ezvinyorwa | Kuwanda | Half-Life | _Kuchengeta |
| 236 | - | 154,000 years | Hapana |
| 237 | - | 2.144 million years | Hapana |
Kuisa Kugadzirisa
[Rn] 5f4 6d1 7s2