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The increasing order of electron affinit...

The increasing order of electron affinity values of `O,S` and `Se` is

A

`O gt S gt Se`

B

`S gt Se gt O`

C

`Se gt O gt S`

D

`S gt O gt Se`

Text Solution

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The correct Answer is:
2
O has exceptionally smaller value of electron affinity `(-141kJ^(-1)mol)` due to smaller atomic size than sulphur ( weaker electron-electron repulsion in `3p-` subshell). It is less tha Se and Te also.
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RESONANCE-PERIODIC TABLE & PERIODICITY-Inorganic chemistry (Periodic Table & Periodicity
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  2. Fluorine has the highest electronegativity among the ns^(2) np^(5) gro...

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  3. The increasing order of electron affinity values of O,S and Se is

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  4. Electron addition will be easier in : -

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  5. Which out of the N or O has higher electron gain enthalpy?

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  6. Following the Mulliken scale, what parameters are required to evaluate...

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  7. Which one of the following oxides is neutral ?

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  8. Whichof the following orders is correct ?

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  9. The correct order of radii is

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  10. In which of the following compound Mn shoes minimum radius ?

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  11. The ionisation energy of A(g) is similar to in terms of magnitude -

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  12. Which of the following statements is INCORRECT ?

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  13. Electron affinity is the :

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  14. If x,y and z are electronegativity, ionisation potential and electron-...

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  15. Which of the following statements is incorrect ?

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  16. If the same elements is forming oxidation in different oxidation state...

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  17. Which of the following statement is correct ?

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  18. The dominating factor responsible for the decreasing ionisation energi...

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  19. Which of the following order is not correct ?

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  20. The correct of the metallic character is :

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