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The p-Block Elements
Question
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Fluorine has lower electron affinity than chlorine and yet it is a stronger oxidising agent than chlorine. Explain.

Answer

This is because :
i)when element combine with fluorine the energy released are highest due to small in size of F.
ii)lattice energy and hydration energy of fluoride are higher those of chlorides.
iii) F2 has a low dissociation energy than Cl2 because of the repulsion between the lone pair on the two F and the non existance of multiple bonding involving d - orbitals.

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