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Which of the following statement concern...

Which of the following statement concerning lanthanides elements is false.

A

Lanthanides are separated from one another by ion exchange method

B

Ionic radii of trivalent lanthanides steadily increases with increase in the atomic number

C

All lanthanides are highly dense metals

D

More characteristic oxidation state of lanthanide elements is +3

Text Solution

Verified by Experts

The correct Answer is:
B
Ionic radius of trivalent lanthanides almost remains constant with increase in the atomic number.
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ERRORLESS -CLASSIFICATION OF ELEMENTS AND PERIODIC PROPERTIES -Ordinary Thinking Objective Questions Atomic and Ionic radii
  1. Elements of which of the following groups will form anions most readil...

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  2. Which of the following statement concerning lanthanides elements is fa...

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  3. Which of the following is largest

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  4. Which of the following has the smallest size?

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

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  6. Which of the following does not represent the correct order of the pro...

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  7. Ionic radii are

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  8. Identify the correct order of the size of the following

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  9. Among the following Ca ,Mg, P and CI the order of increasing atomic ra...

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  10. Among the following which has the highest cation to anion size ratio ...

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  11. Identify the wrong statement in the following ?

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  12. Which of the following orders of ionic radii is correctly represented?

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  13. Which has the maximum atomic radius?

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

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  15. Which of the following ion is the smallest ion is the smallest ion?

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  16. Of the following, the one with largest size is

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  17. Which of the following is the correct order of ionic radii

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  18. Which of the following has the largest ionic raduis?

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  19. The ionic radii (A^@)of C^(-4) and O^(-2) are 2.60 and 1.40 respective...

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  20. In a period, elements are arranged in strict sequence of

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