why the electron affinity of chlorine is greater than fluorine?
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Explanation:
Fluorine, which is higher up the group then chlorine, has a lowerelectron affinity. This is because the electrons in the outermost shell of a fluorine atom are closer together. ... Energy is required to keep the gained electron in the shell, causing fluorine to have a smaller electron affinity than chlorine.
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Recall the reactivity series
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