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Formation of F^(-) is exothermic but fo...

Formation of `F^(-)` is exothermic but formation of `O2^(-)` is endothermic. Explain in two or three sentences.

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Formation of cation is endothermic where formation of anion is exothermic justify .

Assertion: Formation of Cl^(-) ion is exothermic wheres O^(2-) ion formation is endothermic. Reason: EA_(2) of oxygen is endothermic and greater than its exothermic EA_(1) value of oxygen.

Assertion: Formation of Cl^(-) ion is exothermic wheres O^(2-) ion formation is endothermic. Reason: EA_(2) of oxygen is endothermic and greater than its exothermic EA_(1) value of oxygen.

Assertion: Formation of Cl^(-) ion is exothermic wheres O^(2-) ion formation is endothermic. Reason: EA_(2) of oxygen is endothermic and greater than its exothermic EA_(1) value of oxygen.

The formation of F^(-)(g) from F(g) is exothermic while that of O^(2-)(g) from O(g) is endothermic.

Why MgO exist as Mg^(2+)O^(2-) not as Mg^(o+)O^(ɵ) whereas the formation of Mg^(2+) from Mg requires more energy than formation of Mg^(o+) and formation of O^(ɵ) from O is exothermic whereas the formation of O^(2-) is endothermic .

Why MgO exist as Mg^(2+)O^(2-) not as Mg^(o+)O^(ɵ) whereas the formation of Mg^(2+) from Mg requires more energy than formation of Mg^(o+) and formation of O^(ɵ) from O is exothermic whereas the formation of O^(2-) is endothermic .