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Why SO2 is reducing agent and …

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Why SO2 is reducing agent and TeO2 is oxidising agent?

Posted by Raman Brar 6 years, 3 months ago

CBSE > Class 12 > Chemistry

2 answers

Ron Vineetahuja 6 years, 3 months ago

Because due to inert pair effect

Vishal Kumar 6 years, 3 months ago

SO2 is reducing agent because sulphur has d orbital so it can easily expand its oxidation state +4 to +6 and thus behave as reducing agent. But in case of TeO2, tellurium is a heavier element, it can not exhibit higher oxidation state +6 due to inert pair effect so, it only undergoes reduction ( +4 to +2 ) thus it act as an oxidising agent.

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