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What are the different oxidation states exhibited by the lanthanoids ?

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NCERT TELUGU-THE D - ANd F - BLOCK ELEMENTS-Exercises
  1. What are the characteristics of the transition elements and why are th...

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  2. In what way is the electronic configuration of transition elements dif...

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

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  4. Explain giving reasons : Transition metals and many of their compoun...

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  5. What are interstitial compounds ? How are they formed ? Give two examp...

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

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  7. What is the effect of increasing pH on a solution of potassium dichrom...

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

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  9. Describe the preparation of potassium permanganate.

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  10. For M^(2+)//M and M^(3+)//M^(2+) systems the E^(Theta) values for some...

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

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  12. Compare the stability of + 2 oxidation state of the elements of the fi...

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  13. Compare the chemistry of the actinoids with that of lanthanoids with r...

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  14. How would you account for the following: (i) Of the d^(4) species, ...

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  15. What is meant by 'disproportionation' ? Give an example of disproporti...

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  16. Which metal in the first series of transition metals exhibits + 1 oxid...

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

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  18. Give examples and suggest reasons for the following features of the t...

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  19. Indicate the steps in the preparation of: (i) K(2)Cr(2)O(7) from chr...

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  20. What are alloys? Name an important alloy which contains some of the la...

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