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Chemistry · CHEMICAL BONDING AND MOLECULAR STRUCTURE
हिन्दीGiven below are two statements: Statement I: Covalent radii of elements generally decrease across a period from left to right. Statement II: In heteronuclear diatomic molecules like \( \text{HCl} \), the bond dissociation enthalpy is the same as the mean bond enthalpy. In the light of the above statements, choose the most appropriate answer from the options given below:
Correct answer · Option 1
Both Statement I and Statement II are correct.
Explanation
Statement I is correct (radii decrease across a period). Statement II is also correct because for any diatomic molecule (homo- or heteronuclear), there is only one bond, so bond dissociation enthalpy equals mean bond enthalpy.
