The "Super-Ion Battery" Contains K₂FeO₄ as a Replacement for MnO₂

question 134

Multiple Choice

The "super-ion battery" contains K₂FeO₄ as a replacement for MnO₂ in alkaline dry batteries. What is the charge of the iron atom in the compound K₂FeO₄?

• A) +2
• B) +4
• C) +6
• D) 0
• E) - 4

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