The correct sequence of electron gain enthalpy of the elements listed below is:

A. Ar, B. Br, C. F, D. S

Question

The correct sequence of electron gain enthalpy of the elements listed below is:

A. Ar, B. Br, C. F, D. S

Canvas Classes · Accepted Answer

Strategy:
 Electron gain enthalpy () describes the energy released when an atom earns an electron. Noble gases have positive values (resistant), while halogens have the most negative values (highest affinity).

Step 1: Categorize the elements
- Ar (Argon): Noble gas (). Adding an electron requires energy (). (Positive/Least negative)
- S (Sulfur): Group 16. .
- Br (Bromine): Group 17, Period 4. .
- F (Fluorine): Group 17, Period 2. .

Step 2: Compare specific trends
- Fluorine is more negative t

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