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Give reason. (a) Cerium (Ce) exhibits +4...

Give reason. (a) Cerium (Ce) exhibits +4 oxidation state.(b) Actinoid contraction is greater from element to element than lanthanoid contraction.

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Actinoid contraction is greater from element to element than anthanoid contraction Why?

(i) Give the general electronic configuration of d-block elements, (ii) Silver atom has completely filled d-orbitals (4d^10) in its ground state. Yet, it is considered as transition element. Why? (iii) Cu^+ ion is not stable in aqueous solution. Explain. (iv) Actinoids contraction is greater from element to element than lanthanoid contraction. Why?

Why actinoid contraction is more than lanthanoid contraction

Transition elements exhibit _____ oxidation states.

MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-REVISION EXERCISES ( SHORT ANSWER QUESTION)
  1. Explain :(i) Variable oxidation states of d-block elements (ii) d-bloc...

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  2. (a) Define transition elements. (b) Give general electronic configurat...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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