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To what extent do the electronic configu...

To what extent do the electronic configurations decide the stability of oxidation states in the first series of the transition elements? Illustrate your answer with examples.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. How do you prepare: Na2Cr2O7 from Na2CrO4 ?

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  2. Why are Mn^(2+) compounds more stable than Fe^(2+) compounds towards o...

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  3. To what extent do the electronic configurations decide the stability o...

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  4. How would you account for the following: There is a greater range of o...

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  5. The element of second transition series which shows maximum number of ...

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  6. Express 1366 in roman numbers.

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  7. Why Cr^(2+) is strongly reducing while Mn^(3+) is strongly oxidising ?

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  8. Name the members of lanthanoid series which exhibit +2 O.S. Assign rea...

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  9. Express 1367 in roman numbers.

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  10. Why Cu(l) is colourless and Cu(ll) is blue in colour ?

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  11. Write any two consequences of lanthanoids contraction.

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  12. Why are I.E. of 5d - elements greater than 3d- elements ?

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  13. Write the general electronic configuration of transition elements.

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  14. Give three differences between lanthanides and actinides.

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  15. What happens when: KMnO4 is heated at 746 K ?

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  16. What happens when: K2Cr2O7 is heated ?

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  17. Explain why [Ti (H2O)6]^(3+) is violet while [Ti (H2O)6]^(4+) is colou...

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  18. Transition metals form alloys with other transition metals. Explain.

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  19. What are the main consequences of lanthanoid contraction ?

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  20. What happens when K2Cr2O7 reacts with NaCl in the presence of conc. H2...

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