Which elements show an anomalous trend in the negative value of electron gain enthalpy within their respective groups?
(A) In group $16$,the electron gain enthalpy of $S$ is more negative than that of $O$ due to the small size of the $O$ atom,which leads to inter-electronic repulsion.
In group $17$,the electron gain enthalpy of $Cl$ is more negative than that of $F$ because the small size of $F$ causes significant inter-electronic repulsion,making the addition of an electron less favorable compared to $Cl$.
In group $17$,the electron gain enthalpy of $Cl$ is more negative than that of $F$ because the small size of $F$ causes significant inter-electronic repulsion,making the addition of an electron less favorable compared to $Cl$.
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Similar Questions
Electronic configurations of four elements $A, B, C$ and $D$ are given below :
$(A)$ $1s^2 2s^2 2p^6$
$(B)$ $1s^2 2s^2 2p^4$
$(C)$ $1s^2 2s^2 2p^6 3s^1$
$(D)$ $1s^2 2s^2 2p^5$
Which of the following is the correct order of increasing tendency to gain electron :
$(A)$ $1s^2 2s^2 2p^6$
$(B)$ $1s^2 2s^2 2p^4$
$(C)$ $1s^2 2s^2 2p^6 3s^1$
$(D)$ $1s^2 2s^2 2p^5$
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View SolutionArrange the three halogens $Cl$,$Br$,and $I$ in the increasing order of their electron affinity. Which of the following arrangements is correct?
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