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Which of the following oxidation states ...

Which of the following oxidation states is the most common among the lanthanoids ?

A

4

B

2

C

5

D

3

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The correct Answer is:
d
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Read the passage given below and answer the following questions: Although actinoids are similar to lanthanoids in that their electrons fill the 5f orbitals in order, their chemical properties are not uniform and each element has characteristic properties. Promotion of 5 - 6d electrons does not require a large amount of energy and examples of compounds with 77 acid ligands are known in which all the 5f, 60, 7s, and 7p orbitals participate in bonding. Trivalent compounds are the most common, but other oxidation states are not uncommon. Especially, thorium, protactinium, uranium, and neptunium tend to assume the +4 or higher oxidation state. Which of the following oxidation state is common for all lanthanoids?

Which of the following oxidation state si common for all lanthanoids?

Which of the following oxidation states are the most characteristics for lead and tin, respectively?

The most common oxidation state of lanthanoids is

PRADEEP-D- AND F-BLOCK ELEMENTS-TEST YOUR GRIP( MULTIPLE CHOCE QUESTIONS)
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  4. Which of the following oxidation states is the most common among the l...

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  5. Which of the following cation is colourless in its aqueous solution

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  6. Which metal has highest density ?

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  8. Which of the following element about transition elements is incorrect ...

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  10. Which of the following oxides of chromium is amphoteric in nature?

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  11. In the reaction : NaCl+ K(2)Cr(2)O(7) +cons. H(2)SO(4) overset("heat"...

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  12. In KMnO(2) on heating to red hot gives

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  13. KMnO(4) on heating to red hot gives

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  14. Which is the strongest base among the following ?

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  15. The electronic configuration of gadolinium (At. No 64) is:

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  16. Name a member of the lanthanoid series which is well known to exhibit ...

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  17. Larger number of oxidation state are exhibited by the actinoids than t...

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  18. Which of the following factor may be regarded as the main cause of lan...

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  19. Which of the following pairs has the same size ?

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  20. The maximum oxidation state exhibited by actinide ions is

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