Consider the following statements regarding EA 2 : S1: The EA₂ of Sulfur is more endothermic than the EA₂ of Oxygen. S2: The total energy released during F ( g ) → F − ( g ) is greater than the tota

Question

Consider the following statements regarding $EA_{2}$ :

S1: The EA₂ of Sulfur is more endothermic than the EA₂ of Oxygen.

S2: The total energy released during $F (g) \to F^{-} (g)$ is greater than the total energy absorbed during $O^{-} (g) \to O^{2 -} (g)$ .

S3: EA₂ is always a positive value for any element in the ground state.

TestHub · Accepted Answer

Concepts: Absolute values of EA; Experimental vs. Theoretical energy scales.

Solution:

1. S1: Incorrect. O⁻ is smaller, so EA₂ of O ( $+ 780$ ) is more endothermic than S ( $\approx + 450$ ).

2.S2: F → F⁻ releases $\approx 328 k J / m o l$ . O⁻ → O²⁻ absorbs $\approx 780 k J / m o l$ . So $780 > 328$ . The statement says released is greater, so S2 is Incorrect.

3. S3: Correct. Adding an electron to a negative ion always requires work against electrostatic forces. Correct Answer: option 1

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Options:

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