uranium (III) fluoride
• Formula as commonly written: UF3
• Hill system formula: F3U1
• CAS registry number: [13775-06-9]
• Formula weight: 295.024
• Class: fluoride
Synonyms
• uranium (III) fluoride
• uranium fluoride
• uranium trifluoride
Physical properties
• Colour: black or purple-black
• Appearance: crystalline solid
• Melting point: 1140°C (decomposes)
• Boiling point:
• Density: 8900 kg m-3
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
F 19.32 -1 [He].2s2.2p6
U 80.68 3 [Rn].5f3
Synthesis
Not available
Solid state structure
• Geometry of uranium: 9 coordinate: tricapped trigonal prismatic
• Prototypical structure:
Isotope pattern
What follows is the calculated isotope pattern for the UF3 unit with the most intense ion set to 100%.
Formula: U1F3
mass %
291 0.0
292 0.7
293 0.0
294 0.0
295 100.0