In which of the following pairs,electron gain | vedclass

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(C) The electron gain enthalpy $(\Delta_{eg}H)$ values for elements in the same group generally become less negative as we move down the group.
$1$.

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$A$ and $C$ only

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(C) The electron gain enthalpy $(\Delta_{eg}H)$ values for elements in the same group generally become less negative as we move down the group.
$1$. For $Rb$ and $Cs$ (Group $1$): The values are approximately $-47 \ kJ/mol$ and $-46 \ kJ/mol$ respectively,which are nearly identical.
$2$. For $Ar$ and $Kr$ (Group $18$): Noble gases have positive electron gain enthalpy values due to stable electronic configurations. Both $Ar$ and $Kr$ have values around $+96 \ kJ/mol$ to $+99 \ kJ/mol$,which are considered nearly identical.
Therefore,the pairs $A$ $(Rb, Cs)$ and $C$ $(Ar, Kr)$ have nearly identical electron gain enthalpies.

In which of the following pairs,electron gain enthalpies of constituent elements are nearly the same or identical?
$A$. $Rb$ and $Cs$
$B$. $Na$ and $K$
$C$. $Ar$ and $Kr$
$D$. $I$ and $At$
Choose the correct answer from the options given below.

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In which of the following pairs,electron gain enthalpies of constituent elements are nearly the same or identical? $A$. $Rb$ and $Cs$ $B$. $Na$ and $K$ $C$. $Ar$ and $Kr$ $D$. $I$ and $At$ Choose the correct answer from the options given below.