The electron affinities of halogens are F = 322,Cl = 349, Br = 32… - Vidyadip

MCQ

The electron affinities of halogens are $F = 322,Cl = 349, Br = 324, I = 295\, kJ\, mol^{-1}.$The higher value for $Cl$ as compared to that of $F$ is due to :-

✓
Weaker electron-electron repulsion in $Cl$
B
Higher atomic radius of $F$
C
Smaller electronegativity of $F$
D
More vacant $p$ -subshell in $Cl$

✓

Answer

Correct option: A.

Weaker electron-electron repulsion in $Cl$

a
Electron affinity value of $C l$ is higher than of $F$ as $C l$ belongs to the 3 rd period while $F$ belongs to 2nd period. In $C l$, electron-electron repulsion forces are weaker than that of $F$.

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