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The most common oxidation state of lanth...

The most common oxidation state of lanthanoids is

A

`4+`

B

`3+`

C

`6+`

D

`2+`

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The correct Answer is:
B
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Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Name two lanthanoids which exhibit +2 oxidation state.

The most common oxidation state of an element is -2. the number of electrons present in its outer most shell is-

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MARVEL PUBLICATION-D AND F BLOCK ELEMENTS -TEST YOUR GRASP
  1. Which of the following ion of Ianthan ides is / are coloured?

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  2. La^(+3) and Lu^(+3) have their ionic radii 'a' and 'b' respectively, t...

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  3. Which lanthanide element does not occur in nature ?

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  4. For, both lanthanides and actinides, which of the following statement ...

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  5. In which of the following pairs, tripositive ions of both will have s...

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  6. Ionic radius of La^(+3) is 106 pm, ionic radius of Lu^(+3) be

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  7. The most common oxidation state of lanthanoids is

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  8. Which of the following elements belong to actinoid series?

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  9. Which element among the Ianthanoids has the smallest atomic radius ?

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  10. The properties of Zr and Hf are similar because

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  11. Which of the following statement/s is / are true?

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  12. Which of the following statement/s is / are true ?

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  13. Element with following accepted electronic configuration [Rn] 5f^7 6d^...

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  14. Lanthanide and Actinide contraction refers to

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  15. General electronic configuration of lanthanides is

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  16. Oxidation state/s exhibited by Ce is / are

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  17. Lanthanoids are

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  18. Choose the stable oxidation states of cerium (Ce).

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  19. For hydroxides of lanthanides

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  20. Some statements are given below about lanthanides : (A)Their tripos...

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