MCQ
The given reaction, X(g) + e- → X-(g) is an example of:
- AElectron gain enthalpy.
- BElectron loss enthalpy.
- CIonisation enthalpy.
- DBoth (a) and (c).
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| Metal | $Li$ | $Na$ | $K$ | $Mg$ | $Cu$ | $Ag$ | $Fe$ | $Pt$ | $W$ |
| $\phi( eV )$ | $2.4$ | $2.3$ | $2.2$ | $3.7$ | $4.8$ | $4.3$ | $4.7$ | $6.3$ | $4.75$ |
$A\, \rightleftharpoons \,B$ ${K_C} = 2$
$B\, \rightleftharpoons \,C$ ${K_C} = 3$
$C\, \rightleftharpoons \,D+E$ ${K_C} = 5$
$K_C$ for the reaction $A\, \rightleftharpoons \,D+E$ is
