JEE MAIN - Chemistry (2023 - 25th January Morning Shift - No. 1)
Inert gases have positive electron gain enthalpy. Its correct order is :
He < Ne < Kr < Xe
He < Xe < Kr < Ne
Xe < Kr < Ne < He
He < Kr < Xe < Ne
Explanation
| $\begin{gathered}\text { Electron } \\\text { gain }\end{gathered}$ | $\mathrm{He}$ | $\mathrm{Ne}$ | $\mathrm{Ar}$ | $\mathrm{Kr}$ | $\mathrm{Xe}$ |
|---|---|---|---|---|---|
| $\begin{gathered}\text { Enthalpyl } / \\\mathrm{kJ} ~\mathrm{mol}^{-1}\end{gathered}$ | 48 | 116 | 96 | 96 | 77 |
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