Questions tagged [rare-earth-elements]
According to the IUPAC, the rare earth elements are a group that comprises the fifteen lanthanoides (La to Lu), Y and Sc. These elements are commonly grouped together due to the similarity in their chemical properties.
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Why is there anomalous trend in third ionization energy for Pr-Pm and Dy-Er?
It is not hard to observe the anomalously flat regions at Pr-Pm and Dy-Er in the trend of IE3 of lanthanides:, each described as the "first quarter" and "third quarter". Why is ...
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What is the purpose of the reflux ratio for solvent extraction?
Not distillation
If I understand it correctly, in my example, one has two components, A and B, starting at the "feed" in the aqueous phase. They get both extracted in the mixer settler, but ...
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The separation of lanthanum oxide and chromium oxide
I have encountered a problem. How can I separate the alloy of lanthanum oxide and chromium oxide? I attempted to dissolve them in concentrated sulfuric acid with heating, but it didn't work. If I had ...
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