MCQ
The element with configuration $\ce{1 s^2, 2 s^2, 2 p^6, 3 s^2}$ would be :
- AA metal
- BA non $-$ metal
- ✓A inert gas
- DA metalloid
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| Process | $\Delta H / kJ\,mol ^{-1}$ | $\Delta S / J K^{-1}$ |
| $A$ | $-25$ | $-80$ |
| $B$ | $-22$ | $40$ |
| $C$ | $25$ | $-50$ |
| $D$ | $22$ | $20$ |
The number of non-spontaneous process from the following is $.....$