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The pair in which the ionisation energy ...

The pair in which the ionisation energy of first species is less than that of second is

A

`N,P`

B

`Be^(2+),Be`

C

`N,N^(-)`

D

`S,P`

Text Solution

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The correct Answer is:
D
P has higher IE due to stable half filled decreases.
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DINESH PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-All Questions
  1. Which of the following has the largest ionisation energy.

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  2. Which of the following statement concerning ionisation energy is not c...

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  3. The pair in which the ionisation energy of first species is less than ...

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  4. Arrange S, P and As in order of increasing ionisation energy.

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  5. The first ionisation potential of calcium is greatyer than that of pot...

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  6. The increasing order of ionisation energy among sulphur, phosphorous a...

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  7. Which of the following does not affect the ionisation potential of the...

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  8. Which of the following process refers to ionisation potential ?

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  9. r("(van der Waal)") is

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  10. The correct order of the size of C, N, P, S following the order:

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  11. Which of the following has smallest size ?

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  12. Which of the following units are used frequently for atomic radii ?

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  13. The size of the species Cl,Cl^(-) and Cl^(+) decreases as

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  14. The ions which are arranged in correct order of increasing radii are

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  15. Which out of the following has the largest size ?

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  16. The correct arragement of O,P and N in order of increasing radii is

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  17. Covalent radius of Liis 123 pm .The crystal radius of Li will be:

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  18. The ionic species having largest size is

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  19. The size of the following species increases in the order

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  20. Which of the following represents the incorrect order of ionic radii ?

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