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