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Chemistry
What is correct and incorrect about the statement “Because oxygen wants to have a negative two charge, the second electron affinity is more negative than the first”? Correct the incorrect statements and provide an explanation.
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The statement “Because oxygen wants to have a negative two charge” is somewhat correct. Oxygen tends to form a negative two charge (O2-) to achieve a stable electron configuration. However, the statement “The second electron affinity is more negative than the first” is incorrect. The first electron affinity is the energy change when one electron is added to a neutral atom, while the second electron affinity is the energy change when an electron is added to a negatively charged ion. In general, the second electron affinity is less negative (or even positive) than the first due to increased electron-electron repulsion. Therefore, the corrected statement is: “Because oxygen wants to have a negative two charge, it tends to gain two electrons. However, the second electron affinity is less negative than the first due to increased electron-electron repulsion when adding an electron to a negatively charged ion.”
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