Choose one correct answer for each of the following. Which electron affinity pro

Question

Choose one correct answer for each of the following. Which electron affinity process would liberate the most energy? [He] 2s^2 + e^- rightarrow [He] 2s^2 2p^l [He] 2s^2 2p^2 + e^- rightarrow [He] 2s^2 2p^3 [He] 2s^2 2p^3 +e^- rightarrow [He] 2s2 2p^4 [He] 2s^2 2p^3 +e^- rightarrow [He] 2s^2 2p^6 3s^1 Indicate which is larger in each of the following two sets. Cr^3+ or Cr Se^2- or Se Cr^3+ is larger than Cr and Se^2- is larger than Se. Cr^3+ is larger than Cr and Se is larger than Se^2-. Cr is larger than Cr^3+ and Se^2- is larger than Se. Cr is larger than Cr^3+ and Se is larger than Se^2-

Explanation / Answer

1. B

carbon electron affinity value is -122KJ

full filled and half filled electronif configuration element have zero electron affinity.

2. cation size always less than the it's neutral atom.

Anion size always greater than the it's neutral atom.

C Cr is larger than Cr+3 and Se2- is larger than the Se

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