Question

why Electron affinity of Cl is higher as compared to Electron affinity of F ??​

Answer 1

ELECTRON AFFINITY COMPARISON

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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Answer 2

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The electron affinity of chlorine is more than that of fluorine atom this is due to very small size of fluorine atom which results is very high density so, strong repulsion between non bonding electrons and entering electrons.