The average oxidation state of the 2 H atoms in H2S2O8is +1. ElementOxidation Number (Avg)AtomsCountElectronegativity O-7/4-2 (×6), -1 (×2)83.4 S+6+6 (×2)22.6 H+1+1 (×2)22.2 🛠️ Calculate Oxidation Numbers Instructions ...