Question

The electron gain enthalpy (in kJ/mol) of Fluorine, Chlorine, Bromine and Iodine, respectively, are:

• A. $-333,-325,-349\text{and}-296$
• B. $-333,-349,-325\text{and}-296$
• C. $-296,-325,-333\text{and}-349$
• D. $-349,-333,-325\text{and}-296$

Answer 1

The correct option is B $-333,-349,-325\text{and}-296$

$\begin{array}{cc}\text{Electron gian enthalpy}& \text{kJ/mol}\\ \text{Fluorine}& -333\\ \text{Chlorine}& -349\\ \text{Bromine}& -325\\ \text{Iodine}& -296\end{array}$

Correct order is: $Cl>F>Br>I$