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NCERT Class XII Chemistry
Chapter - The p-Block Elements
Questions with Solutions

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Question : 66
Total: 74
Considering the parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy, compare the oxidising power of F2 and Cl2.
Solution:  
Fluorine is a better oxidising agent than chlorine because E°F2∕F– is higher than E°Cl2∕Cl–. It is mainly due to low bond dissociation energy, high hydration energy and lower electron gain enthalpy, non-availability of d-orbitals in valence shell, that results in higher reduction potential ofF2 than chlorine.
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