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Practice question

MCQ

Question

What is the oxidation number of sulfur in Na₂S₂O₃?

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Choose one · Correct answer highlighted

Explanation

Let S = x. Na = +1, O = -2. Equation: 2(+1) + 2x + 3(-2) = 0, 2 + 2x - 6 = 0, 2x = 4, x = +2 (average).

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