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Standard reduction potential (E^(0)) of ...

Standard reduction potential `(E^(0))` of `Mn^(3+)|Mn^(2+)` system is higher than that of `Cr^(3+)|Cr^(2+)` and `Fe^(3+)|Fe^(2+)` system. Explain.

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High energy is required for the conversion of `Mn^(2+)to Mn^(3+)(d^(5)to d^(4))`
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Why standard reduction potential (E^(0)) of Zn^(2+)|Zn system is more negative than expected ?

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Explain why Mn^(2+) is more stable than Mn^(3+) ?

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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -EXERCISE (VERY SHORT ANSWER-TYPE QUESTIONS)
  1. Why is d^(1) configuration of transition elements highly unstable ?

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  2. Why is the value of E(Cu^(2+)|Cu)^(0)(+0.34V) positive ?

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  3. Standard reduction potential (E^(0)) of Mn^(3+)|Mn^(2+) system is high...

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  4. Why does Mn^(2+) exhibit the highest paramagnetism among the bivalent ...

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  5. What do you obtain if MnO(2) is fused with solid KOH in air ?

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  6. What is the higher oxidation state exhibited by actinoids ?

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  7. Why are Eu^(2+) and Yb^(2+) highly stable ?

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  8. How many unpaired electrons are there in Gd(Z = 64) atom ?

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  9. What is the structure of manganate ion ?

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  10. What is the common oxidation state of the lanthanoids ?

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  11. Why do transition metals have high atomisation energy ?

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  12. Why do transition elements exhibit variable oxidation states ?

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  13. In volumetric analysis, why is K(2)Cr(2)O(7) used to prepare the stand...

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  14. Why is KMnO(4) stored in dark coloured bottles ?

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  15. Why does explosion occur if conc. H(2)SO(4) is added to KMnO(4) ?

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  16. Why is Fe^(2+) ion smaller than Mn^(2+) ion ?

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  17. Why do transition elements form coloured compounds ?

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  18. Complete the reaction : TiCl(4)+H(2)O to

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  19. Why does zinc have the lowest atomisation energy (126 kJ.mol^(-1)) amo...

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  20. Which among the following exhibit the highest number of oxidation stat...

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