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Grade:
        F2 has lower bond dissociation enthalpy than Cl2. Why?
8 months ago

Answers : (1)

Ankit
104 Points
							The bond dissociation energy of F2 is 156.9 kJ/mol.     Fluorine is a highly electronegative element.        Fluorine molecule is a pretty small one as compared to Chlorine.        Therefore it has a very small atomic radius.        Two fluorine atoms have to come together to share a pair, so that the octet is completed.But as many electrons concentrated on two small nuclei and separated over comparatively a very small distance repel each other.                This is because same charge repel one another Hence the F-F bond is weeker than Cl bond which has larger atomuc radius
						
8 months ago
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