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Which of the following ions is paramagne...

Which of the following ions is paramagnetic ?

A

`La^(3+)` (Z = 57)

B

`Lu^(3+)` (Z = 71)

C

`Yb^(2+)` (Z = 70)

D

`Sm^(3+)` (Z = 62)

Text Solution

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The correct Answer is:
D
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MODERN PUBLICATION-CHEMISTRY OF D-AND F-BLOCK ELEMENTS-Multiple Choice Questions (Level -I) Transition metal compounds and their Characteristics
  1. Silica is added to roasted copper ore during smelting in order to remo...

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  2. Iron is rendered passive when treated with conc. :

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  3. The principal oxidation state of lanthanides is :

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  4. The lanthanoid contraction refers to :

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  5. Which of the following is not correct ?

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  6. Which of the following ions is paramagnetic ?

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  7. The separation of landthanoids in ion exchange method is based on :

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  8. which of the following has the smallest ionic radius ?

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  9. Zr and Hf have almost identical atomic radii. Give reason.

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  10. The colour of lanthoanoids and actinoids is due to :

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  11. Which of the following has tendency to act as an oxidising agent ?

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  12. Which of the following pairs has almost same colours ?

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  13. Which of the following good oxidising agent ?

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  14. The major component of alloys of lanthanides is

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  15. The lanthanide contraction is responsible for the fact that

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  16. The electronic configuration of terbium (IV) (At no. 65) is

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  17. Which of the following ions will exhibit colour in aqueous solutions ?

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  18. The lanthanoid elements than has the electronic configuration. [Xe] 4f...

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  19. Which of the following hydroxide has maximum basic character ?

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  20. Which of the following pair of ions have the same colour ?

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