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Arrange Ce^(3+) (Z = 58), Sm^(3+) (Z = 6...

Arrange `Ce^(3+) (Z = 58), Sm^(3+) (Z = 62) and Yb^(3+)(Z = 70)` in decreasing order of ionic radii.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. How many unpaired electrons are present in Gd(Z = 64) ?

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  2. Name the actinoid used for the manufacture of fine rods for atomic rea...

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  3. Arrange Ce^(3+) (Z = 58), Sm^(3+) (Z = 62) and Yb^(3+)(Z = 70) in decr...

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  4. Name the basic cause of similar atomic radii of Hf and Zr.

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  5. Does actinoids show actinoid contraction similar to lanthanoid contrac...

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  6. Name the trivalent lanthanoid having the configuration [Xe] 4f^7.

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  7. Which of the following ion is colourless ? U^(3+), Cm^(4+), Th^(4+)

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  8. Write the number of unpaired electrons in Pr ^(4+)

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  9. True of False : Mn2O7 is a basic oxide.

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  10. Write reactions of KMnO4, in neutral medium with : MnSO4

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  11. Why are Ni^(2+) compounds thermodynamically more stable than Pt^(2+)...

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  12. True of False : Both La^(3+) and Lu^(3+) are diamagnetic.

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  13. True of False : The number of unpaired electrons in V^(2+) is 2

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  14. Explain the structure of Cr2O7^(2-)

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  15. Ti^(3+) compounds appear purple. Why?

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  16. Complete the following statement- Carrot, Spinach, tomato, red bell pe...

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  17. What is the oxidation state of Cr in CrO5.

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  18. True of False : Lanthanide compounds are less basic than actinide comp...

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  19. Complete the missing links: In CrO4^(2-) ion, Cr is .......... hybridi...

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  20. Write the general electronic configuration of transition elements.

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