Which of the following statements correctly describes a periodic property related to electron affinity?
- A) Electron affinity values become consistently more negative as one moves down a group due to increased electron shielding.
- B) Noble gases release the greatest amount of energy upon gaining an electron because of their stable valence octet.
- C) Chlorine has a more negative first electron affinity than fluorine because the smaller 2p subshell in fluorine experiences greater electron-electron repulsion.
- D) Group 2 alkaline earth metals have significantly more negative electron affinities than Group 1 alkali metals due to their higher nuclear charge.
