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What is the formula of potassium permanganate, and how to calculate the oxidation number for mn in potassium permanganate
Accepted Answer
The formula for potassium permanganate is KMnO₄. Here's how to determine the oxidation number of Mn in this compound:
1. Assign known oxidation numbers:
Potassium (K) is in Group 1, so its oxidation number is +1.
Oxygen (O) is usually -2, except in peroxides.
2. Set up an equation:
Let the oxidation number of Mn be 'x'.
The overall charge of the compound is 0 (neutral).
Equation: (+1) + x + 4(-2) = 0
3. Solve for x:
1 + x - 8 = 0
x = +7
Therefore, the oxidation number of Mn in potassium permanganate (KMnO₄) is +7.
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