Questions/P Block elements G15-18/How do you account f...
Group 16 ElementsP Block elements G15-18

How do you account for the formation of oxides having O2O^{2-} despite high positive electron gain enthalpy for OO2O \rightarrow O^{2-}?

Expert Answer

The high energy required is compensated by the high lattice energy (in solids) or hydration energy (in solution) of the oxide.

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