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Lanthanide contraction occurs because...

Lanthanide contraction occurs because

A

Zr and Hf have same radius

B

Zr and Zn have the same oxidation state

C

Zr and Y have same radius

D

Zr and Nb have similar oxidation state

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The correct Answer is:
A
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Lanthanoid contraction implies

(A): Elements of second and third transition series have nearly same atomic radii (R): Lanthanide contraction is observed in the elements from atomic number 58 to 71.

The Lanthanide contraction relates to (AFMC)

What is lanthanide contraction? What are its consequences?

Regarding lanthanide contraction, some statements are given a) It arises because of the poor shielding effect of 5f-electrons b) The atomic radii and ionic radii steadily decrease from Ce to Lu c) The crystal structures and other properties are similar d) The seperation of lanthanides from one another is difficult from their salt solutions. The correct statements are

What is Lanthanoid contraction ?

What is lanthanide contraction? Give one of its consequences.

AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -2B
  1. lonic radii (in oversetoA) of As^(3+), Sb^(3+) and Bi^(3+) follow the ...

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

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  3. Lanthanide contraction occurs because

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  4. Radius of Cs^(+) ion is less than that of A) Fluoride ion B) Chlo...

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  5. The sizes of A, A^+ and A^- follows the order

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  6. Which of the following has the largest atomic radius ?

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  7. Which of the following grouping represents a collection of iso-electio...

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  8. Which is not related to lanthanide contraction

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  9. A trend common to both groups 1 and 17 elements in the periodic table ...

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  10. The screening effect of d-electrons is

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  11. (A): The first ionisation energy of B is less than that of Be (R) :...

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  12. (A): The second ionisation energy of 'O' is greater than that of secon...

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  13. The species with largest ionisation potential

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  14. Which of the following has highest first ionisation potential?

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  15. The electronic configuration of elements A, B, and Care [He] 2s^(1), [...

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  16. The first ionisation potential is maximum for

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  17. Second ionization energy of an element is higher than its firs...

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  18. (A): The second electron affinity f oxygen is endothermic. (R): Oxyg...

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  19. Consider the elements N, P, O and S and arrange them in order of : ...

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  20. The process requiring the absorption of energy is

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