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QuestionChemistry

"The permanganate anion has the formula MnO^4−. Propose formulas and names for the ionic compounds between the permanganate ion and the following cations: 1. K+ 2. Ca^2 + 3. Fe^3 +"
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Step 1:
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Step 2:
: Understanding the Permanganate Ion

- The permanganate ion is $$MnO_{4}^{-}
- It has a charge of - 1 - We need to balance the charges when forming ionic compounds with different cations

Step 3:
: Compound with Potassium (K+)

- Formula: $$KMnO_{4}
- Potassium ion has a charge of + 1 - Name: Potassium permanganate

Step 4:
: Compound with Calcium (Ca^2 +)

- Formula: $$Ca(MnO_{4})_{2}
- Calcium ion has a charge of + 2 - Name: Calcium permanganate

Step 5:
: Compound with Iron(2$) (Fe^3 +)

- Formula: $$Fe(MnO_{4})_{3}
- Iron(III) ion has a charge of + 3 - Name: Iron(III) permanganate

Final Answer

1. KMnO_{4} (Potassium permanganate) 2. Ca(MnO_{4})_{2} (Calcium permanganate) 3. Fe(MnO_{4})_{3} (Iron(III) permanganate)