七氟合镤(V)酸钾

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| NameEn = Potassium heptafluoroprotactinate(V)
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| K=2 | F=7 | Pa=1
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| Density = 4.846 g·cm−3向含有PaV和K+的17 mol/L HF中加入过量丙酮，也可沉淀出K2PaF7。它是单斜晶系晶体，空间群C2/c，晶胞参数a=13.675 Å，b=6.690 Å，c=8.096 Å，β=125.087°。

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