Hindered $\beta$-diketonates like $\mathrm{dpmH}(\mathrm{dpmH}=$ dipivaloylmethane $)$ are used for the separation of lanthanides because complexes formed with dpmH can be separated by
(a)Gel permeation chromatography
(b)Gas chromatography
(c)Gel filtration chromatography
(d)Ion exchange chromatography
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
The bulky t-butyl groups make Ln(dpm)₃ complexes volatile and monomeric, so they can be separated by gas chromatography.