MCQ
Electricity do not pass through ionic compounds
- AIn solution
- ✓In solid state
- CIn melted state
- DNone of these
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$O(g) + e^- \to O^-(g); \Delta H = - 142 \,kJ \,mol^{-1}$
$O^-(g) + e \to O^{2-} (g); \Delta H = 844\, kJ \,mol^{-1}$
This is because