Which element shows a fractional oxidation state in FeS₂?
In FeS₂ (pyrite), Fe = +2, and S₂ acts as a peroxide-like unit with S = -1 (average). Sulfur’s state is fractional in context.
Ref: NCERT Class 11 Chemistry > Chapter 7: Redox Reactions > Topic: Redox Titrations and Equivalent Weight and Normality
