The formation of the oxide ion O 2- (g) requires first an exothermic a

1.	The formation of the oxide ion O 2- (g) requires first an exothermic and then an endothermic step - as shown below: O (g) + e - ====> O - (g) ; ΔH 0 = -142 kJ mol -1 O - (g) + e - ====> O 2- (g) ; ΔH 0 = +844 kJ mol -1 This is because: A) oxygen is more electronegative B) oxygen has high electron affinity C) O - ion will tend to resist the addition of another electron D) O - ion has comparatively larger size than oxygen atom
Answer» ANSWER: d Explanation: the OXYGEN has camparatively larzer SIZE than axygen ATOM

The formation of the oxide ion O 2- (g) requires first an exothermic and then an endothermic step - as shown below: O (g) + e - ====> O - (g) ; ΔH 0 = -142 kJ mol -1 O - (g) + e - ====> O 2- (g) ; ΔH 0 = +844 kJ mol -1 This is because: A) oxygen is more electronegative B) oxygen has high electron affinity C) O - ion will tend to resist the addition of another electron D) O - ion has comparatively larger size than oxygen atom

Answer»

Explanation:

the OXYGEN has camparatively larzer SIZE than axygen ATOM