MCQ
Which one of the following is correct order of electron gain enthalpy?
- A$\ce{S < O < Cl < F}$
- B$\ce{Cl < F < S < O}$
- C$\ce{F < Cl < O < S}$
- ✓$\ce{O < S < F < Cl}$
✓
Answer
Correct option: D.
$\ce{O < S < F < Cl}$
Oxygen and fluorine has exceptionally small size, therefore more interelectronic repulsion that is why have lower electron gain enthalpy than $\ce{S}$ and $\ce{Cl}$ respectively.
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