The electron gain enthalpies of halogens are as given below: `F =- 332, CI =- 349, Br =- 324, I =- 295 kJ mol^(-1)`. The less negative value for F as

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The electron gain enthalpies of halogens are as given below: `F =- 332, CI =- 349, Br =- 324, I =- 295 kJ mol^(-1)`. The less negative value for F as

The electron gain enthalpies of halogens are as given below:
`F =- 332, CI =- 349, Br =- 324, I =- 295 kJ mol^(-1)`. The less negative value for F as compared to that of CI is due to:
A. Strong electron-electron repulsions in the compact 2p-sub shell of F
B. Weak electron-electron repulsions in the bigger 3p-sub shell of Cl
C. Smaller electronegativity value of F than Cl
D. (A) & (B) both

Monjur Alahi

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2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
Due to small size of F atom, the electron-electron repulsions in compact 2-p shell are large and hence the incoming electron is not accepted with the same ease as is the case with Cl (less electron-electron repulsion)

5 views Answered 2023-02-05 15:29