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Which of the following pairs of elements...

Which of the following pairs of elements have similar atpmic radii?

A

`P, S`

B

`As, Se`

C

`N, O`

D

`Sb, Te`

Text Solution

Verified by Experts

The correct Answer is:
C
Though one expects `O` to be smaller than `N`, but in case of `O`, the interelectronic repulsion outweights the effect of increased nuclear charge and hence, both `N` and `O` have similar convalent radii. The effect of interelectronic repulsions dies out on moving down the group due to increased nuclear charge.
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R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test
  1. Which of the following radius is the largest?

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  2. Which of the followinf has the smallest atomic radius?

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  3. Which of the following pairs of elements have similar atpmic radii?

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

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  5. Which of the following statements is not correct?

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  6. Which of the following has the smallest ionic radius?

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  7. Sizes of the seond and third row transition elements are almost the sa...

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  8. which of the following has largest radius ?

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  9. Which of the following species will have the largest size?

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  10. Which of the following is not correct?

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

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  12. For the transition elements, the variations in atomic radii are not so...

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  13. While dealing with multielectron atoms or ions, we must use the concep...

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  14. In SI system, the ionizarion enthalpy is measured in

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  15. Ionization enthalpies are

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  16. The first ionzation enthalpies generally increase form to right across...

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  17. The largest ionization enthalpies in any period occur for the

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  18. The values of ionzation enthalpies tend to increase within each period...

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  19. Ionization enthalpies tend to decrease going down any column of main g...

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  20. Ionizarion is not limited to the removal of a single electron from an ...

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