The increasing order of basicity for the following intermediates is (from weak to strong)

The increasing order of basicity for the following intermediates is (from weak to strong)
  1. iii<i<ii<iv<v
  2. v<i<iv<ii<iii
  3. v<iii<ii<iv<i
  4. iii<iv<ii<i<v

Solution

Basicity is inversely proportional to electronegativity.

Higher the electron affinity or core charge of an atom, the less likely it is to donate its electrons to a proton.
Greater the delocalization of electrons that could potentially donate to a proton, the less able they are to donate.
Greater the electron-withdrawing effects in another part of a molecule, the less likely the electrons on a particular atom are to donate.

Asked in: JEE Main 2020 (09 Jan Shift 1)

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