In the reaction 2S + 3O₂ → 2SO₃, how many electrons are transferred per sulfur atom?
S (0) becomes +6 in SO₃. Change = +6 - 0 = 6 electrons per S atom.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Electrode Potential and Electrochemical Series and Galvanic Cells