Knowing the electron gain enthalpy values of `O->O^(-)` and `O->O^(2-)` as -141 and 702 `kJ mol^(-1)` respectively, ho

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Q 1971656526.     Knowing the electron gain enthalpy values of
`O->O^(-)` and `O->O^(2-)` as -141 and 702 `kJ mol^(-1)`
respectively, how can you account for the
formation of a large number of oxides having
`O^(2-)` species and not `O^-`?

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Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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