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The lanthanide contraction is responsibl...

The lanthanide contraction is responsible for the fact that
(a)Zr and Yt have about the same radius
(b)Zr and Nb have smaller oxidation state
(c)Zr and Hf have about the same radius
(d)Zr and Zn have the same oxidation state.

A

Zr and Y have about the same radius

B

Zr and Nb have similar oxidation state

C

Zr and Hf have about the same radius

D

Zr and Zn have the same oxidation state

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-THE D AND F-BLOCK ELEMENTS -Assingnment(Section -A ( Objective Type Questions)(One option is correct))
  1. Which of the following oxide is acidic in nature ?

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  2. Lanthanoid which is radioactive is

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  3. The lanthanide contraction is responsible for the fact that (a)Zr and...

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  4. Size of lanthanoid decrease becaue of poor screening of

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  5. The strongest base is

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  6. The element that is not present in misch metal is

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  7. Which is the most common oxidation state of lanthanoids?

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  8. When intimate mixture of potassium dichromate and potassium chloride i...

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  9. Which of the following pairs of ions have the same electronic configur...

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  10. Cr(2)O(7)^(2-)+Xoverset(H^(o+))rarrCr^(3+)+H(2)O+ "oxidised product" o...

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  11. The reducing nature of any metal in aqueous solution depends upon a...

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  12. Which of the following oxide is basic ?

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  13. The spin only magnetic moment of transition metal ion found to be 5.92...

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  14. The correct electronic configuration of lanthanum is

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  15. Give the general electronic configuration of actinoids

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  16. Lanthanoid which is radioactive is

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  17. Which is correct

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  18. Lanthanides and Actinides generally differ in

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  19. Acidified K(2)Cr(2)O(7) on reaction with hydrogen peroxide give deep b...

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  20. Hybridisation of chromium ions in chromate and dichromate ions is resp...

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