Which of the following reactions gives a positive value for the electron affinity? A)S^-(g)+ e^- → S^2-(g) B)O(g)+ e^- → O^-(g) C)S(g)+ e^- → S^-(g) D)Br(g)+ e^- → Br^-(g)

Question

Quizplus · Accepted Answer

The addition of an electron to an already negatively charged ion (like S^-) to form a more negatively charged ion (like S^2-) is typically endothermic, resulting in a positive electron affinity value.

Which of the Following Reactions Gives a Positive Value for the Electron