(A) The electron affinity of $Cl$ $(349 \ kJ \ mol^{-1})$ is higher than that of $F$ $(322 \ kJ \ mol^{-1})$. This is because the $2p$ subshell of $F$

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Weaker electron-electron repulsion in $Cl$

(A) The electron affinity of $Cl$ $(349 \ kJ \ mol^{-1})$ is higher than that of $F$ $(322 \ kJ \ mol^{-1})$. This is because the $2p$ subshell of $F$ is very small,leading to significant inter-electronic repulsion when an incoming electron is added. In contrast,the $3p$ subshell of $Cl$ is larger,which results in weaker electron-electron repulsion,making it easier for $Cl$ to accept an electron.

Class 11 Chemistry Classification of Elements and Periodicity in Properties Electron affinity

Medium

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 :-

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

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Class 11

Chemistry Questions

Chapter

Classification of Elements and Periodicity in Properties

Subtopic

Electron affinity

Within each pair of elements of $F$ and $Cl$,$S$ and $Se$,and $Li$ and $Na$,respectively,the elements that release more energy upon an electron gain are

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The electron gain enthalpy values (in $kJ \ mol^{-1}$) of three halogens $X$,$Y$ and $Z$ are respectively $-349$,$-333$ and $-325$. Then $X$,$Y$ and $Z$ are respectively

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Which of the following statements is correct?

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The amount of energy released for the process $X_{(g)} + e^- \to X^-_{(g)}$ is minimum and maximum respectively for :-
$(a) \ F$
$(b) \ Cl$
$(c) \ N$
$(d) \ B$
Correct answer is :-

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Which element has the highest electron gain enthalpy?

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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 :-

Similar Questions

Within each pair of elements of $F$ and $Cl$,$S$ and $Se$,and $Li$ and $Na$,respectively,the elements that release more energy upon an electron gain are

The electron gain enthalpy values (in $kJ \ mol^{-1}$) of three halogens $X$,$Y$ and $Z$ are respectively $-349$,$-333$ and $-325$. Then $X$,$Y$ and $Z$ are respectively

Which of the following statements is correct?

The amount of energy released for the process $X_{(g)} + e^- \to X^-_{(g)}$ is minimum and maximum respectively for :-$(a) \ F$$(b) \ Cl$$(c) \ N$$(d) \ B$Correct answer is :-

Which element has the highest electron gain enthalpy?

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The amount of energy released for the process $X_{(g)} + e^- \to X^-_{(g)}$ is minimum and maximum respectively for :-
$(a) \ F$
$(b) \ Cl$
$(c) \ N$
$(d) \ B$
Correct answer is :-