Which one has greater electron affinity and why?cl or F

Cl (Chlorine) has higher electron affinity or electron gain enthalpy as compared to F(Fluorine) as though F is most electronegative in the whole periodic table and so has the highest tendency to attract electrons

Explanation:

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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