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What is the primary oxidation state of manganese in MnO4-?

Practice Questions

Q1
What is the primary oxidation state of manganese in MnO4-?
  1. +2
  2. +4
  3. +6
  4. +7

Questions & Step-by-Step Solutions

What is the primary oxidation state of manganese in MnO4-?
  • Step 1: Identify the compound MnO4-. It consists of one manganese (Mn) atom and four oxygen (O) atoms.
  • Step 2: Know the common oxidation state of oxygen, which is -2.
  • Step 3: Calculate the total oxidation state contributed by the four oxygen atoms: 4 oxygen atoms × -2 = -8.
  • Step 4: The overall charge of the MnO4- ion is -1.
  • Step 5: Set up the equation for the oxidation state of manganese (let's call it x): x + (-8) = -1.
  • Step 6: Solve for x: x - 8 = -1, so x = -1 + 8, which gives x = +7.
  • Step 7: Therefore, the oxidation state of manganese in MnO4- is +7.
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