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Incorrect Statement among the following is (JEE mains memory based shift-1 23/01/2025)

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Incorrect Statement among the following is (JEE mains memory based shift-1 23/01/2025)

a

\({\mathrm{SO}}_{2}\) acts as oxidizing agent but not reducing agent

b

\({\mathrm{NO}}_{2}\) exist as a dimer

c

\({\mathrm{PF}}_{5}\mathrm{exists}\mathrm{but}{\mathrm{NF}}_{5}\) does not

d

\({\mathrm{PH}}_{3}\) has lower proton affinity than \({\mathrm{NH}}_{3}\)

✓ Correct answer: a)

\({\mathrm{SO}}_{2}\) acts as oxidizing agent but not reducing agent

Explanation

In SO₂, sulfur has an oxidation number of +4. It acts as a reducing agent by increasing its oxidation number to +6 ( forming H₂SO₄) and as an oxidizing agent by decreasing its oxidation number to 0 ( forming sulfur). Thus, SO₂ shows both behaviors.

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