he electron affinity of an element is positive if energy is absorbed during the
ID: 838729 • Letter: H
Question
he electron affinity of an element is positive if energy is absorbed during the process of accepting an electron and negative if energy is released during the process. Using the electron configuration of the atom or ion undergoing the addition of an electron, predict whether the electron affinity will be positive or negative for the following reactions, and classify them accordingly.
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Positive Electron Affinity OR Negative Electron Affinity
Atom or ion Electron configuration He 1s2 Cl 1s22s22p63s23p5 Na 1s22s22p63s1 Mg 1s22s22p63s2 F? 1s22s22p6Explanation / Answer
He1s2 = Positive
Cl 1s2 2s2 2p6 3s2 3p5 =negative
Na 1s2 2s2 2p6 3s1 = Positive
Mg 1s2 2s2 2p6 3s2 =Positive
F- 1s2 2s2 2p6 = Positive
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