The formation of the oxide ion `O_((g))^(2-)` requires first an exothermic and then an endothermic step as shown below. `O_((g)) +e^(-) = O_((g))^(-) DeltaH^(@) =- 142 kJ mol^(-1)` `O_((g))^(-) + e^(-) = O_((g))^(2-) DeltaH^(@) = 844 kJ mol^(-1)` This is because of :A. `O^(-)` ion will tend to resist the addition of another electronB. Oxygen has high electron affinityC. Oxygen is more electronegativeD. `O^(-)` ion has comparitively larger size than oxygen atom

The formation of the oxide ion `O_((g))^(2-)` requires first an exothe

1.	The formation of the oxide ion `O_((g))^(2-)` requires first an exothermic and then an endothermic step as shown below. `O_((g)) +e^(-) = O_((g))^(-) DeltaH^(@) =- 142 kJ mol^(-1)` `O_((g))^(-) + e^(-) = O_((g))^(2-) DeltaH^(@) = 844 kJ mol^(-1)` This is because of :A. `O^(-)` ion will tend to resist the addition of another electronB. Oxygen has high electron affinityC. Oxygen is more electronegativeD. `O^(-)` ion has comparitively larger size than oxygen atom
Answer» Correct Answer - A

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