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Which of the following can be associated...

Which of the following can be associated with the concept of Lanthanoid contraction?

A

5d series elements have a higher `IE_(1)` than 3d or 4d series .

B

Zr and Hf have a comparable size.

C

Zr and hf occurs together in the earth curst in their minerals.

D

High density of the sixth period elemts .

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The correct Answer is:
D
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DISHA PUBLICATION-THE D- AND F- BLOCK ELEMENTS -EXERCISE - 1 CONCEPT BUILDER (TOPIC 3: LANTHANOIDS AND ACTINOIDS)
  1. The radius La^(3+) (Z= 57) is 106 pm . Which one of the following give...

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  2. Which of the following can be associated with the concept of Lanthanoi...

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  3. What is the percentage of lanthanoid metal in mischmetall ?

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  4. Among the lanthanoids, the one obtained buy synthetic method is

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  5. Which of the following elements shows maximum number of different oxid...

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  6. Which of the following factors may be regarded as the main cause of la...

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  7. The heavisest atom oamongst the following is

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  8. Which of the following ions will exhibit colour in aqueous solution ?

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  9. Which of the following exhibit only + 3 oxidation state ?

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  10. Which of the following lanthanoid ions is diamagnetic ? (At nos . Ce...

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  11. Reason of lanthanoid contraction is

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  12. Because of lanthanoid contraction, which of the following pair sof ele...

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  13. Gadolinium belongsd to 4f series. It's atomic number is 64. which of t...

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  14. The electronic configuration of Eu (Atomic No. 63), Gd (Atomic No. 64)...

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  15. The reason for greater range of oxidation state in actinoids is attrib...

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  16. Non - lanthanoid atom is

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  17. Which of the following lanthanoid ions is diamagnetic ? (At nos Ce ...

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  18. Lanthanoid contraciton can be observed in

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  19. Which is not correct statements ? (At. Nos. Ce = 58, Lu = 71 , Yb =7...

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  20. Which of the following statement concerning lanthanides elements is fa...

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