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Write any three applications of d and f-...

Write any three applications of d and f-block elements.

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MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-REVISION EXERCISES ( SHORT ANSWER QUESTION)
  1. (a) Define transition elements. (b) Give general electronic configurat...

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  2. Give reason. (a) Cerium (Ce) exhibits +4 oxidation state.(b) Actinoid ...

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  3. Write any three applications of d and f-block elements.

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  4. (i) Which of the following are coloured in aqueous solution ? Give rea...

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  5. (i) Explain why most of the Cu(I) compounds are unstable in aqueous so...

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  6. (i) What is the most common oxidation state of the actinoids? (ii) Why...

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  7. Zn^(2+) salt are white while Cu^(2+) salts are blue. Assign reason.

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  8. Calculate the number of unpaired electrons in Cr^(3+) and V^(3+) io...

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  9. How will you account for the following: (a) Actinoids exhibit more num...

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  10. (i) What are interstitial compounds ? (ii) Transition metals show good...

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  11. (a) Define transition metals. (b) Why do transition metals form colour...

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  12. (a) What is lanthanoid contraction and write its consequences ? (b) Dr...

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  13. (a) Why are Zn, Cd and Hg not regarded as transition metals? (b) Why d...

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  14. (a) How will you prepare KMnO4 from pyrolusite ore ? (b) Complete the...

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  15. (a) Why do transition metals act as good catalysts? (b) Why do transit...

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  16. (a) Indicate the steps in the preparation of K2Cr2O7 from chromite ore...

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  17. When MnO2 is fused with KOH in the presence of KNO2 as an oxidising ag...

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  18. Give reasons for the following: (i) Transition elements and their co...

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  19. Give reasons for the following: (i) Transition metals form alloys....

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  20. How would you account for the following? (i) Cr^(2+) is reducing...

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