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Larger number of oxidation states are ex...

Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids. This can be best explained as

A

lesser energy difference between 5f and 6d than between 4f and 5d orbitals

B

more energy difference between 5f and 6d than between 4f and 5d orbitals

C

more reactive nature of the actinoids than the lanthanoids

D

4f orbitals more diffused than the 5f orbitals

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The correct Answer is:
A
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AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -2B
  1. Match the following in view of highest values

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  2. The atomic numbers of elements A, B, C and D are Z1, Z, Z + 1 and 2 + ...

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  3. Larger number of oxidation states are exhibited by the actinoids than ...

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  4. Match the following correctly

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  5. Match the following correctly

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  6. Match the following correctly

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  7. Which of the following is not correct in the case of Be and Al ?

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  8. Observe the following statements. Q I. The physical and chemical prope...

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  9. The following are some statements about periodic properties i) Atomi...

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  10. The following are some statements about diagonal relationship i) Th...

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  11. Three elements, X,Y and Z belong to the same period. Their oxides are ...

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  12. The elements 'X', 'Y' and 'Z' form oxides which are acidic, basic and ...

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  13. The formation of O^(-2) and N^(-3) are endothermic, but metal oxides ...

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  14. Some statements are given below. Among them, the correct statement are...

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  15. Ce-58 is member of

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  16. The radii of F, F^(-), O, O^(2-) are in the order

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  17. O^(2-) and Si^(4+)are isoelectronic ions. If the ionic radius of O^(2-...

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  18. lonic radii (in oversetoA) of As^(3+), Sb^(3+) and Bi^(3+) follow the ...

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  19. The order of decrease in atomic radii for Be, Na and Mg is

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  20. Lanthanide contraction occurs because

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