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  4. The correct order of electron gain enthalpies of Cl, F, Te and Po is

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Q. The correct order of electron gain enthalpies of $Cl, F, Te$ and $Po$ is

JEE MainJEE Main 2022Classification of Elements and Periodicity in Properties

Solution:

As $Cl$ has maximum electron affinity among all elements.
Element $\Delta_{\text {eg }} H ( k J / m o l )$
F -328
Cl -349
Te -190
Po -174