Question:
The oxidation state of Fe in $Fe₃O₄$ is ________.
The oxidation state of Fe in $Fe₃O₄$ is ________.
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The oxidation state of Fe in $Fe3O4$ is ____.
Updated On: Apr 15, 2026
- +3
- $8/3$
- +6
- +2
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The Correct Option is B
Solution and Explanation
Step 1: Equation
Let the oxidation state of Fe be '$x$'. In $Fe_3O_4$, the sum of oxidation states must be zero.
Step 2: Calculation
$3(x) + 4(-2) = 0$ $3x - 8 = 0$ $x = 8/3$.
Step 3: Note
$Fe_3O_4$ is a mixed oxide (ferroso-ferric oxide) composed of $FeO$ (+2) and $Fe_2O_3$ (+3). The value $8/3$ is the average oxidation state.
Final Answer: (B)
Let the oxidation state of Fe be '$x$'. In $Fe_3O_4$, the sum of oxidation states must be zero.
Step 2: Calculation
$3(x) + 4(-2) = 0$ $3x - 8 = 0$ $x = 8/3$.
Step 3: Note
$Fe_3O_4$ is a mixed oxide (ferroso-ferric oxide) composed of $FeO$ (+2) and $Fe_2O_3$ (+3). The value $8/3$ is the average oxidation state.
Final Answer: (B)
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