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Which of the following has the largest i...

Which of the following has the largest ionisation energy.

A

`""_(11)Na`

B

`""_(19)K`

C

`""_(12) Mg`

D

`""_(37)Rb`

Text Solution

Verified by Experts

The correct Answer is:
C
Among Rb,K and Na the `IE_(1)` decreases as RbltKltNa. but `IE_(1)` of NaltMg.
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DINESH PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-All Questions
  1. The power of an atom to attract the shared pair in a molecule:

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  2. Which out of the following has the largest ionisation energy ?

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  3. Which of the following has the largest ionisation energy.

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

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

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

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

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

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

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

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

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

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  13. Which of the following has smallest size ?

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

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

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

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

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

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

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  20. The ionic species having largest size is

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