What is the oxidation number of sulfur in Na₂S₂O₃?
Let S = x. Na = +1, O = -2. Equation: 2(+1) + 2x + 3(-2) = 0, 2 + 2x - 6 = 0, 2x = 4, x = +2 (average).
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Classical and Electronic Concept of Redox and Oxidation Number
