Californium(III) oxide
Chemical compound
From Wikipedia, the free encyclopedia
Californium(III) oxide is a binary inorganic compound of californium and oxygen with the formula Cf
2O
3.[1] It is one of the first obtained solid compounds of californium, synthesized in 1958.
| Names | |
|---|---|
| Other names
Californium sesquioxide, dicalifornium trioxide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider |
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| Properties | |
| Cf2O3 | |
| Molar mass | 550 g·mol−1 |
| Appearance | yellow-green solid |
| Density | g/cm3 |
| Melting point | 1,750 °C (3,180 °F; 2,020 K) |
| insoluble | |
| Structure | |
| orthorhombic | |
| Related compounds | |
Related compounds |
Californium dioxide |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
radioactive |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis
The compound can be prepared by burning ionite in air, on which ions of trivalent californium are sorbed, at a temperature of 1400 °C. It can also be obtained by β-decay of berkelium(III) oxide.[citation needed]
Physical properties
Californium(III) oxide forms a yellow-green solid with a melting point of 1750 °C and exists in three modifications.[2] The body-centered cubic modification forms a crystal lattice with a = 1083.9 ± 0.4 pm. The transition temperature between body-centered cubic and monoclinic structures is about 1400 °C.[3][4]
It is insoluble in water.[5]
