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$\begingroup$ It can be said polarity is multidimensional, as there are several phenomena that contribute in different proportions to the overall perceived "polarity". It is relative permittivity, dipole moment, polarisability, donor-acceptor properties, forming hydrogen bonds. It can be well illustrated by mobile phase choice in reverse HPLC, where 3 m. phases with the same elution time for main component (H2O + CH3OH/CH3CN/THF respectively ) have very different elution times for minor impurities, during determining the chromatographic purity ) $\endgroup$
– Poutnik
Commented Nov 10, 2020 at 17:09
$\begingroup$ Yes, another source of confusion from polarity is the chromatographic usage. $\endgroup$
– ACR
Commented Nov 10, 2020 at 19:43
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$\begingroup$ goldbook.iupac.org/terms/view/P04710 $\endgroup$
– Mithoron
Commented Nov 10, 2020 at 22:21

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