Choose the correct order of Delta H_{eg} ?(De | vedclass

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(B) Moving down the group $16$ elements $(O, S, Se, Te)$,the electron gain enthalpy generally becomes less negative (decreases) due to the increase in

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$O < Se < S$

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(B) Moving down the group $16$ elements $(O, S, Se, Te)$,the electron gain enthalpy generally becomes less negative (decreases) due to the increase in atomic size.However,oxygen $(O)$ belongs to period $2$ and has a very small,compact atomic size.This small size leads to significant inter-electronic repulsion between the incoming electron and the existing electrons in the $2p$ subshell,making the electron gain enthalpy of oxygen less negative than that of sulfur $(S)$.Therefore,the correct order of electron gain enthalpy $(\Delta H_{eg})$ is $O < Se < S$.

Choose the correct order of $\Delta H_{eg}$ ?
$(\Delta H_{eg} = \text{electron gain enthalpy})$

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Choose the correct order of $\Delta H_{eg}$ ?$(\Delta H_{eg} = \text{electron gain enthalpy})$