AIPMT PRELIMS2003Chemistry-Oxidation States
AIPMT PRELIMS 2003 Chemistry Sulphur Compounds MCQ Question
Type: MCQ-conceptual-Medium-Class 12
The oxidation states of sulphur in the anions SO₃²⁻, S₂O₄²⁻ and S₂O₆²⁻ follow the order -
A
S₂O₄²⁻ < SO₃²⁻ < S₂O₆²⁻
B
SO₃²⁻ < S₂O₄²⁻ < S₂O₆²⁻
C
S₂O₄²⁻ < S₂O₆²⁻ < SO₃²⁻
D
S₂O₆²⁻ < S₂O₄²⁻ < SO₃²⁻
Correct Answer
Option A
Detailed Explanation
The oxidation state of sulphur in SO₃²⁻ is +4, in S₂O₄²⁻ is +3, and in S₂O₆²⁻ is +5. Therefore, the order is S₂O₄²⁻ < SO₃²⁻ < S₂O₆²⁻.
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