Why the electron affinity or electron gain enthalpy of Chlorine is higher than Fluorine ? Even if Fluorine is most electronegative element.

chlorine shows exceptionally higher electron gain enthalpy than that of florine.

Even if the Fluorine is most electronegative element still its electron gain enthalpy is lower than Chlorine.

In case of Fluorine the size of valence shell is so small that the upcoming electron experiences repulsions so it is not practically easy for Fluorine to gain an electron as compared to Chlorine.

On other hand in case of Chlorine the outer or valence shell is enough large to accommodate the upcoming electron. So the electron affinity of chlorine is higher.

Published by Ankush Sharma

I am M.Sc (chemistry ) from Punjabi University Patiala. I am a science teacher with expertise in chemistry, with 8 years of experience in teaching. Writing and blogging is my hobby, I write whenever I am free. I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge.

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