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The reason for greater range of oxidatio...

The reason for greater range of oxidation state in actinoids is attributed to:

A

actinoid contraction

B

5f, 6d and 7s levels having comparable energies

C

4f and 5d levels being close in energies

D

the radioactive nature of actinoids

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The correct Answer is:
B
5f, 6d and 7s levels having comparable energies
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The reason for the greater range of oxidation states of actinoids is attributed to

How would you account for the following : (i) Many of the transition elements are virtually the same as those of the corresponding members of the second series. (iii) There is a greater range of oxidation states among the actinoids than among the lanthanoids.

(a) When a chromite ore (A) is fused with an aqueous solution of sodium carbonate in free excess of air, a yellow solution of compound (B) is obtained. This solution is filtered and acidified with sulphuric acid to form compound (C). Compound (C) on treatment with solution of KCl gives orange crystals of compound (D). Write the chemical formulae of compounds A to D. (b) Describe the cause of the following variations with reSQPect to lanthanoids and actinoids: (i) Greater range of oxidation states of actinoids as compared to lanthanoids. (ii) Greater actinoid contraction as compared to lanthanoid contraction. (iii) Lower ionisation enthalpy of early actinoids as compared to the early lanthanoids.

There is a greater range of variable oxidation states among the actinoids than among the lanthanoids, Why ?

Which element show highest oxidation state in actinoid

MODERN PUBLICATION-D AND F-BLOCK ELEMENTS-COMPETITION FILE (MULTIPLE CHOICE QUESTION ((B) MULTIPLE CHOICE QUESTION FROM COMPETITIVE EXAMINATION))
  1. Which one of the following statements related to lanthanons is incorre...

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  2. Name the gas that can readily decolourise acidified KMnO(4) solution:

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

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  4. Which one of the following ions exhibits d-d transition and paramagnet...

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  5. Match the metal ions given in Column I with the spin magnetic moments ...

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  6. The magnitude and permanganate ions are tetrahedral due to

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  7. Amount of oxalic acid present in a solution can be determined by its t...

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  8. Mark the correct statements(s) (1) Manganeses exhibits +7 oxidation ...

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  9. The maximum oxidation state exhibited by actinide ions is

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  10. KMnO4 gets reduced to

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  11. The bonds present in the structure of dichromate ion are

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  12. In context of the lanthanoids, which of the following statements is no...

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  13. Iron exhibits +2 and +3 oxidation states. Which of the following state...

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  14. When H(2)O(2) is shaken with an acidified solution of K(2)Cr(2)O(7) in...

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  15. Four successive members of the first series of transition metals are l...

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  16. Which of the following arrangements does not represent the correct ord...

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  17. Which series of reactions correctly represents chemical rections relat...

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  18. The colour of KMnO(4) is due to

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  19. Which one of the following ions has same numbr of unpaired electrons a...

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  20. Among the following pairs the maximum, oxidation states is shown by

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