Uranium Oxide, di-UO2
uranium (IV) oxide
Uranium Oxide, di-UO2
- Formula as commonly written: UO2
- Hill system formula: O2U1
- CAS registry number: [1344-57-6]
- Formula weight: 270.028
- Class: oxide
Synonyms
- uranium (IV) oxide
- uranium dioxide
- uranium oxide
- pitchblende
Physical properties
- Colour: dark brown
- Appearance: crystalline solid
- Melting point: 2827°C
- Boiling point:
- Density: 10970 kg m-3
Suppliers
IBI Labs
Element analysis and oxidation numbers
For each compound, and where possible, a formal oxidation number for each element is given, but the usefulness of this number is limited, especially so for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only.
| Element | % | Formal oxidation state | Formal electronic configuration |
| O | 11.85 | -2 | [He].2s2.2p6 |
| U | 88.15 | 4 | [Rn].5f2 |
Synthesis
Not available
Solid state structure
- Geometry of uranium:
- Prototypical structure:
Isotope pattern
What follows is the calculated isotope pattern for the UO2 unit with the most intense ion set to 100%.
Formula: U1O2
mass %266 0.0 267 0.7 268 0.0 269 0.0 270 100.0 271 0.1 272 0.4
| CAS # | Formula | Formula Weight | |||
| 1344-57-6 | UO2 | 270.07 | |||
| Color Crystalline Form | Specific Gravity | Melting Point | Boiling Point | ||
| brn-blk, cub | 10.97 | 2827 | …….. | ||
| Solubility in 100 parts | |||||
| Cold Water | Hot Water | Other Reagents | |||
| s HNO3 | |||||