Question
In which of the following process, least energy is required :-

Answer

b
$A_{(g)}^ - \xrightarrow[{I.P.}]{}{A_{(g)}} + {e^ - }$

$A_{(g)}^ - \xrightarrow[{E.A.}]{}{A_{(g)}} + {e^ - }$

$\mathrm{E.A.}$ of $\mathrm{A}_{(\mathrm{g})}=\mathrm{IP}$ of $\mathrm{A}_{(\mathrm{g})}^{-}$

$EA$ onder

$\mathrm{P}<\mathrm{S}<\mathrm{F}<\mathrm{Cl}$

$IP$ order

$\mathrm{P}^{-}<\mathrm{S}^{-}<\mathrm{F}^{-}<\mathrm{Cl}^{-}$

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