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How would you account for the increasing...

How would you account for the increasing oxidising power in the series `VO_2^(o+)ltCr_2O_7^(2-)< MnO_4^(ɵ)`?

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This is due to the increasing stability of the lower species to which they are reduced.
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(a) Complete the following chemical equations: (i) Cr_(2) O_(7)^(2-) (aq) + H_(2) S(g) + H^(+) (aq) to (ii) Cu^(2+)(aq) + I^(-) (aq) to (b) How would you account for the following : (i) The oxidising power of oxoanions are in the order VO_(2)^(+) lt Cr_(2)O_(7)^(2-) lt Mn O_(4)^(-) (ii) The third ionization enthalpy of manganess (Z = 25) is exceptionally high. (iii) Cr^(2+) is a stronger reducing agent than Fe^(2+) .

Following order is observed in oxidising power of certain ions : VO_2^(+) lt Cr_2O_7^(2-) lt MnO_4^(-) The reason for this increasing order of oxidising power is

NCERT-THE D AND F BLOCK ELEMENTS-Exercise
  1. How would you account for the increasing oxidising power in the series...

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  2. Write down the electronic configuration of: (i). Cr^(3+) (ii). Pm^...

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

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  4. Explain briefly how +2 state become more and more stable in the first ...

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  5. To what extent do the electronic configurations, decide the stability ...

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

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  7. Name the oxometal anions of the first series of the transition metals ...

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  8. What is lanthanoid contraction? What are the consequences of lanthanol...

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  9. What are the characteristics of the transition elements and why are th...

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  10. In what way is the electronic configuration of the transition elements...

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  11. What are the different oxidation states exhibited by the lanthanoids?

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  12. Explain gives reason. (a) Transition metal and many of their compoun...

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  13. What are interstitial compounds? Why are such compounds well known for...

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

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  15. Describe the preparation of potassium dichromate from iron chromite or...

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  16. Describe the oxidising action of potassium dichromate and write the io...

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  17. Describe the preparation of potassium permanganate. How does the acidi...

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  18. For M^(2+)//M and M^(3+)//M^(2+) systems the E^(ϴ) values for some met...

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  19. Predict which of the following will be coloured in aqueous solution? ...

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  20. Compare the stability of +2 oxidation state for the elements of the fi...

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  21. Compare the chemistry of actinoids with that of the lanthanoids with s...

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