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F2 has lower bond dissociation enthalpy than Cl2. Why? - CBSE (Science) Class 12 - Chemistry

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Question

F2 has lower bond dissociation enthalpy than Cl2. Why?

Solution

The size of a fluorine atom is very small as compared to a chlorine atom. Therefore, the repulsion between electrons in the outer most shell of the two atoms in a fluorine molecule is much greater than that in a chlorine molecule. Hence, it requires less energy to break up the fluorine molecule, making its bond dissociation energy lesser than that of chlorine molecule.

  Is there an error in this question or solution?
Solution F2 has lower bond dissociation enthalpy than Cl2. Why? Concept: P - Block Group 17 Elements - Concept of Group 17 Elements.
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