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The atomic radii of the elements are alm...

The atomic radii of the elements are almost same of which series

A

Fe-Co-Ni

B

Na-K-Rb

C

F-Cl-Br

D

Li-Be-B

Text Solution

Verified by Experts

The correct Answer is:
A
Fe-Co-Ni with the increase in the d-electrons, screening effect increases, this counter balance the increased nuclear charge due to increase in atomic number. As a result atomic radii remain practically same after chromium.
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BRILLIANT PUBLICATION-THE D-AND F-BLOCK ELEMENTS-QUESTIONS (LEVEL-III)
  1. The atomic radii of the elements are almost same of which series

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  2. A metal M which is not affected by strong acids like conc. HNO3 conc. ...

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  3. The acidic, basic or amphoteric nature of Mn2 O7 ,V2O5, and CrO are re...

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  4. An inorganic compound on strong heating gave a blackish brown powder a...

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  5. MnO(2) overset(I)(to)MnO(4)^(2-)overset(II)(to)MnO(4)^(-) I and II are

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  6. Identify the product and its colour when MnO2 is fused with solid KOH ...

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  7. When manganous salt is fused with a mixture of KNO3 and solid NaOH, th...

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  8. Consider following statements, I. The size of the lanthanide M^(3+) io...

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  9. Most transition metals I:forms sets of compounds which display differe...

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  10. [Fe(H2 O)5 NO]^(2+) is brown-ring complex. In this complex

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  11. When K2 CrO4 is added to CuSO4 solution, there is formation of CuCrO4...

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  12. Select the correct statements(s)

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  13. Which of the following statements are true?

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  14. Although +3 is the characteristic oxidation state for lanthanoids, cer...

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  15. Select correct statements.

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  16. When CO2 is passed into aqueous

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  17. Select correct statements (s)

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  18. Which of the following statements are correct

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  19. Amongst the following, identify the species with an atom in +6 oxidati...

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  20. Which metals are present in german silver?

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  21. The complex forming tendency of a transition metal depends upon:

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