Q. Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?
A) Cl < F < S < O
B) O < S < F < Cl
C) S < O < Cl < F
D) F < Cl < O < S
Explanation
[Solution from source] Cl has the most negative electron gain enthalpy. F and O are less negative than Cl and S because their small size causes strong electron–electron repulsion; also halogens exceed chalcogens. So O < S < F < Cl. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.