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Why are Mn^(2+) compounds more stable th...

Why are `Mn^(2+)` compounds more stable than `Fe^(2+)` towards oxidation to their +3 state?

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The correct Answer is:
It is because `Mn^(2+)` has `3d^(5)` configuration which has extra stability.
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RESONANCE ENGLISH-D BLOCK ELEMENTS-EXERCISE-2 PART-I
  1. Why is the highest oxidation state of a metal exhibited in its oxide o...

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  2. What may be the stable oxidation state of the transition element with ...

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  3. Why are Mn^(2+) compounds more stable than Fe^(2+) towards oxidation t...

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  4. How is the variability in oxidation states of transition metals differ...

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  5. Which metal in the first series of transition metals exhibits +1 oxida...

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  6. The E^(0)(M^(2+)//M) value for copper is positive (+0.34V). What is po...

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  7. Why is the E^(ϴ) value for the Mn^(3+)//Mn^(2+) couple much more posit...

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  8. Which is a stronger reducing agent Cr^(2+)or Fe^(2+) and why ?

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  9. Explain why Cu^(+) ion is not stable in aqueous solutions?

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  10. The aqueous solution of FeCl(3) is acidic . Why?

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  11. Ferric iodide is very unstable but ferric chloride is not

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  12. Copper dissolves in dilute nitric acid but not in dilute HCl. Why?

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  13. Blue colour of CuSO(4) solution is discharge slowly when an iron rod i...

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  14. Copper (I) ions are not known in aqueous solution.

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  15. Calculate the number of unpaired electrons in the following gaseous io...

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  16. Mercurous ion is written as Hg(2)^(2+) whereas cuprous ion is written ...

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  17. Copper sulphate dissolves in NH(4)OH solution but FeSO(4) does not.

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  18. An aqueous solution of inorganic compounds (X) gives following reactio...

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  19. H(2)S gas is passed through an acidic solution of K(2)Cr(2)O(7) .The s...

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  20. What happen when(i) a small amount of KMnO(4) is added to concentrated...

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