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Incorrect statement among the following ...

Incorrect statement among the following is

A

Actinide contraction is greater than the lanthanide contraction

B

Actinides exhibit variable oxidation states

C

Most the actinides are naturally occurring

D

Successive oxidation states of actinides differed by one unit

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The correct Answer is:
C
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AAKASH SERIES-D-BLOCK ELEMENTS-OBJECTIVE EXERCISE-1 (LANTHANIDES AND ACTINIDES)
  1. Actinide that is naturally available with highest isotopic number

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  2. Which of the following Lanthanoid is radioactive

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  3. Which of the following pair of ions have same outer electronic configu...

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  4. Which of the following is strong oxidant ?

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  5. Among the following correct basic strength order is i) La(OH)3 , ii)...

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  6. More number of oxidation states are exhibited by the actinoids than by...

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  7. An 'f' block element without any f electron is

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

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  9. Incorrect statement among the following is

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  10. Among the following largest ion is

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  11. 4f^(14) configuratoin is observed in

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  12. Which element among the lanthanides has the smallest atomic radius

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  13. The electronic configuration of Gadolinium (At. No.64) is

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  14. Across the lanthanide series, the basic strength of the lanthanide hyd...

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  15. Most common oxidation states shown by cerium are

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  16. Which of the following statements is not correct

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  17. Arrange Ce^(3+),La^(3+),Pm^(3+), and Yb^(3+) in increasing order of th...

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  18. The basic character of the transition metal monoxides follows the orde...

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  19. Actinides have higher tendency to form complexes than Lanthanides, due...

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  20. Which of the following oxidation states is common for all lanthanides ...

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