For the elements , and , which of the following represents the correct increasing order of the absolute magnitude of their negative electron gain enthalpies?

Question

For the elements $F, Cl, O$, and $S$, which of the following represents the correct increasing order of the absolute magnitude of their negative electron gain enthalpies?

Prashant Kotian · Accepted Answer

Correct answer: B. Electron gain enthalpy generally increases in magnitude across a period and decreases down a group. However, 3rd period p-block elements have higher magnitudes than 2nd period elements due to less inter-electronic repulsion. Thus, and . The combined correct increasing order of magnitude is .

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