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Chemical compound From Wikipedia, the free encyclopedia
Berkelium(III) fluoride is a binary inorganic compound of berkelium and fluorine with the chemical formula BkF
3.[1][2][3]
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Names | |
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Other names
berkelium trifluoride | |
Identifiers | |
3D model (JSmol) |
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Properties | |
BkF3 | |
Molar mass | 304 g·mol−1 |
Appearance | yellow-green solid |
Density | 9.70 g/cm3 |
Related compounds | |
Related compounds |
Berkelium tetrafluoride Einsteinium(III) fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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The compound can be prepared by treating Bk
2O
3 with a gaseous mixture of H
2 and HF at 600 °C.[4]
Berkelium trifluoride forms a yellow-green solid with two structures.[5] At low temperature, it is orthorhombic (YF
3 structure), with lattice parameters a = 670 pm, b = 709 pm, and c = 441 pm. At high temperature, it is trigonal (LaF
3 structure), with lattice parameters a = 697 pm and c = 714 pm. The transition temperature of BkF
3 is between 350 and 600 °C.[6][7]
Berkelium trifluoride is reduced by lithium to obtain metallic berkelium:
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