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  4. Assertion: Ozone is a powerful oxidising agent in comparison to O2 . Reason: Ozone is diamagnetic but O2 is paramagnetic.

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Q. Assertion : Ozone is a powerful oxidising agent in comparison to $O_2$ .
Reason : Ozone is diamagnetic but $O_2$ is paramagnetic.

AIIMSAIIMS 2005The p-Block Elements - Part2

Solution:

Ozone is a powerful oxidising agent next to fluorine. It is much stronger oxidising agent than oxygen because on easy decomposition it forms nascent oxygen.
$O _{3} \longrightarrow O _{2}+[ O ]$
It is also true that $O _{3}$ diamagnetic while $O _{2}$ is paramagnetic.

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