Why can not $O^{2-} $ exist in water?
a) it is a very strong base which reacts quickly to form $ OH^- $ b) it attacks water and reacts quickly to form $ H_3O^+ $ (c) it reaches an equilibrium with $ OH^- $ d) it reacts with $ H_2 (g) $ to form $ H_2O $ and is thus destroyed
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a) it is a very strong base which reacts quickly to form $ OH^- $
