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The correct order of radii is...

The correct order of radii is

A

`N lt Be lt B`

B

`F^(-) lt O^(2-) lt N^(3-)`

C

`Na lt Li lt K`

D

`Fe^(3+) lt Fe^(2+) lt Fe^(4+)`

Text Solution

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The correct Answer is:
B
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MOTION-PERIODIC TABLE -Exercise - 4 | Level-II
  1. One element has atomic weight 39. Its electronic configuration 1s^(2) ...

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  2. Number of paired electrons in O(2) molecule is .

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  3. The decreasing size of K^(+) , Ca^(2+) , Cl^(-) & S^(2-) follows the o...

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  4. Which of the following oxide is neutral ?

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  5. Which of the following has the maximum number of unpaired electrons ?

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  6. The following acids have been arranged in order of decreasing acid str...

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  7. The incorrect statement among the following is : (A)

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  8. Which of the following are amphoteric ?

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  9. Li^(+),Mg^(2+),K^(+),Al^(3+) (Arrange in increasing order of radii)

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  10. Anhydrous AlCl(3) is covalent . From the data given below predict whet...

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  11. Which one of the following statement (s) is (are) correct ? (A) Th...

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  12. Statement-1 : F arom has a less negative electron gain enthalpy than C...

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  13. Al(OH)(3) is amphoteric is nature. Al-O and O-H bonds can be borken ...

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  14. The correct order of radii is

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  15. The correct order of acidic strength is

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  16. The IE(1) of Be is greater than that of B. [T/F]

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  17. The set representing correct order of IP(1) is

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  18. Identify the least stable ion amongst the following:

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  19. Identify the correct order of acidic strengths of CO(2) , CuO , CaO , ...

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  20. The increasing order of atomic radii of the following group 13 element...

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