Question: The electron gain enthalpy (in $\mathrm{kJ} / \mathrm{mol}$ ) of fluorine, chlorine, bromine and iodine, respectively are:
$-333,-349,-325$ and $-296$
$-296,-325,-333$ and $-349$
$-333,-325,-349$ and $-296$
$-349,-333,-325$ and $-296$
Correct Option: 1
Solution:
Order of electron gain enthalpy (magnitude) is
$\mathrm{Cl}>\mathrm{F}>\mathrm{Br}>\mathrm{I}$
