MCQ
Electronic configuration$1{s^2},\,2{s^2}2{p^6},\,3{s^2}3{p^6}3{d^5},\,4{s^1}$ represents
- ✓Ground state
- BExcited state
- CAnionic state
- DAll of these
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${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(g)$ is $\Delta {H_1}$ and that of
${H_2}(g) + \frac{1}{2}{O_2}(g) \to {H_2}O(l)$ is $\Delta {H_2}$. Then
