Question

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

Answer 1

Explanation:

Fluorine, which is higher up the group then chlorine, has a lower electron 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.