The correct order of electron gain enthalpy of $\mathrm{N}, \mathrm{O}, \mathrm{Cl}$, $\mathrm{Al}$ is

The correct order of electron gain enthalpy of $\mathrm{N}, \mathrm{O}, \mathrm{Cl}$, $\mathrm{Al}$ is
  1. $\mathrm{Cl} < \mathrm{N} < \mathrm{O} < \mathrm{Al}$
  2. $\mathrm{Al} < \mathrm{N} < \mathrm{O} < \mathrm{Cl}$
  3. $\mathrm{O} < \mathrm{N} < \mathrm{Al} < \mathrm{Cl}$
  4. $\mathrm{N} < \mathrm{O} < \mathrm{Cl} < \mathrm{Al}$

Solution

Correct order of electron gain enthalpy:- $\mathrm{Al} < \mathrm{N} < \mathrm{O} < \mathrm{Cl}$ It is higher for non-metallic elements that have higher electronegativities (higher in magnitude)

Asked in: AP EAMCET 2023 (17 May Shift 1)

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