Neptunium trioxide
Chemical compound
From Wikipedia, the free encyclopedia
Neptunium trioxide is an inorganic compound of neptunium and oxygen with the chemical formula NpO3.[1]
| Names | |
|---|---|
| Other names
Neptunium(VI) oxide | |
| Identifiers | |
| Properties | |
| NpO3 | |
| Molar mass | 285 g·mol−1 |
| Appearance | dark brown crystals (hydrate) |
| insoluble | |
| Related compounds | |
Other cations |
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
| |
Synthesis
Physical properties
Neptunium trioxide is highly volatile and exists only in the hydrated form. It is insoluble in water. It forms dark brown hydrate crystals of variable composition NpO3•xH2O, where x = 1–2.[5] The NpO3•H2O hydrate crystals are of orthorhombic system.