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The p-Block Elements
why is bond dissociation of energy of fluorine molecule less than that of chlorine molecule ?
It is because of the small atomic radius of Fluorine. Fluorine has quite a small atomic radius compared to the Chlorine. Fluorine gas is diatomic. Since the atomic radius of Fluorine is very small, the nuclei of both the Fluorine atoms repel each other(like charges repel), Fluorine gas(F2) has a really small dissociation energy compared to the chlorine
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