MCQ
Adsorption of gases on solid surface is generally exothermic because
- AEnthalpy is positive
- ✓Entropy decreases
- CEntropy increases
- DFree energy increase
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| Element | $IE_1$ | $IE_2$ | $IE_3$ |
| $P$ | $495.8$ | $4562$ | $6910$ |
| $Q$ | $737.7$ | $1451$ | $7733$ |
| $R$ | $577.5$ | $1817$ | $2745$ |
Then incorrect option is