22
Question
The formation of the oxide ion O2−(g) requires first an exothermic and then an endothermic step as shown below,
O(g)+e→O−(g);ΔH=−142 kJ/mol
O−(g)+e→O2−(g);ΔH=844 kJ/mol
These is because:
The formation of the oxide ion O2−(g) requires first an exothermic and then an endothermic step as shown below,
O(g)+e→O−(g);ΔH=−142 kJ/mol
O−(g)+e→O2−(g);ΔH=844 kJ/mol
These is because:
Open in App
Solution
The correct option is C O− ion will lead to resist the addition of another electron
When an electron is further added to O− ion, there is an interelectronic repulsion observed by the extra electron to the incoming electron and hence energy has to be supplied in order to over come this repulsion thus giving rise to an endothermic reaction.
When an electron is further added to O− ion, there is an interelectronic repulsion observed by the extra electron to the incoming electron and hence energy has to be supplied in order to over come this repulsion thus giving rise to an endothermic reaction.
Suggest Corrections
0
Similar questions
View More
Join BYJU'S Learning Program
Explore more
Join BYJU'S Learning Program
