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The correct order of electron affinity o...

The correct order of electron affinity of B, C, N, O is

A

`O gt C gt N gt B`

B

`B gt N gt C gt O`

C

`O gt C gt B gt N`

D

`O gt B gt C gt N `

Text Solution

Verified by Experts

The correct Answer is:
C
`underset(140.9)O gt underset(122.3)C gt underset(83)B gt underset0 N` Value of electron affinity increases on going from left to right in periods but the value of electron affinity of Vth A elements is less than that of IVth A element, this is due to half filled p-orbitals present.
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ERRORLESS-CLASSFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -NCERT BASED QUESTIONS (Electron Affinity)
  1. Which one of the following statements is false

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  2. The electron affinity for the inert gases is

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  3. The electronic configuration of the element with maximum electron affi...

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  4. Which of the following has the least electron affinity in kJ mol^(-1)?

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  5. Fluorine has lower electron affinity than chlorine because of

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  6. Which of the following species has the highest electron affinit...

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  7. Which of the following species has the highest electron affinit...

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  8. Which one of the elements has the maximum electron affinity?

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  9. Order of electron affinity of F,Cl,Br and I is

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  10. Which one of the following ionic species has the greatest proton affin...

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  11. The electron affinity of Be is almost similar to that of

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  12. The element with positive electron gain enthalpy is

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  13. Arrange S,O and Se in ascending order of electron affinity?

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  14. The energy evolved is highest for which of the following reactions

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  15. Increasing order of electron affinity is

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  16. The correct order of electron affinity of B, C, N, O is

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  17. The electron affinities of halogens are F=322, Cl=349,Be=324,I=295kJ m...

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  18. The electron gain enthalpy values (in kJ mol^(-1) ) of three halogens,...

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  19. Which of the following pairs show reverse properties on moving along a...

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  20. the amount of energy released when 10^(6) atoms of iodine in vapour st...

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