The order of negative electron gain enthalpy | vedclass

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Question

(B) The electron gain enthalpy becomes more negative as we move from left to right across a period and becomes less negative as we move down a group.

Vedclass · Accepted Answer

$Cl > S > Li > Na$

Vedclass · Answer

(B) The electron gain enthalpy becomes more negative as we move from left to right across a period and becomes less negative as we move down a group. For the given elements: $Cl$ (Group $17$,Period $3$) has the highest negative electron gain enthalpy. $S$ (Group $16$,Period $3$) follows $Cl$. $Li$ (Group $1$,Period $2$) and $Na$ (Group $1$,Period $3$) have low negative values,with $Li$ being more negative than $Na$ due to its smaller size. Thus,the correct order of negative electron gain enthalpy is $Cl > S > Li > Na$.

The order of negative electron gain enthalpy of $Li$,$Na$,$S$,$Cl$ is

Similar Questions

Explain the trends in electron gain enthalpy across periods and down groups.

Which elements show an anomalous trend in the negative value of electron gain enthalpy within their respective groups?

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 :

Which of the following pairs of elements would have a more negative electron gain enthalpy?
$(i)$ $O$ or $F$
$(ii)$ $F$ or $Cl$

The first electron affinity of $C, N$ and $O$ will be of the order

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