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Similarity in the radius of Zr and Hf is...

Similarity in the radius of Zr and Hf is explained on the basis of

A

Lanthanide contraction

B

Inert pair effect

C

Same outershell configuration

D

Anomalous configuration

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The correct Answer is:
A
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The properties of Zr and Hf are similar because :

AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -1 (ATOMIC AND IONIC RADIUS)
  1. Atomic radius is measured by

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  2. Atomic radius depends upon (i) Number of bonds formed by the atom ...

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  3. Covalent bond length of chlorine molecule is 1.98Å. Then covalent radi...

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  4. Van der Waal's radius is used for

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  5. If the atomic radius of non-metal bromine is 1.14 Å, its covalent radi...

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  6. The covalent and van der Waals radii of chlorine respectively are

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  7. In the isoelectronic species the ionic radii (A^@) of N^(3-) , O^(2-) ...

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  8. Correct statement among the following is

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  9. Very slight decrease in atomic radius occurs in a transition series wh...

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  10. Separation of Lanthanides from their mixture is not easy because of

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  11. If the radius of Fe^(+ +) is 0.76A^@, the radius of Fe^(+ + +) may be

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  12. Among elements with the following electronic configurations, the one w...

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  13. Largest ion among the following is

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

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  15. Which of the following order is correct for the size of Fe^(3+) , Fe a...

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  16. Metallic radius of Ca is 200pm. Covalent radius of Ca is

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  17. Similarity in the radius of Zr and Hf is explained on the basis of

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  18. Which one is the correct order of the size of the iodine species?

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  19. Identify the correct order of innic radii of the following ions

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  20. The Lanthanide contraction relates to (AFMC)

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