Question

would you expect the second electron gain enthalpy of O as positive , more negative or less negative than the first? Justify your answer .​

Answer 1

Answer:

But when another electron is added to Oө to form O2- ion, energy is absorbed to overcome the strong electrostatic repulsion between the negatively charged Oө ion and the second electron being added. Thus,the second electron gain enthalpy of oxygen is positive.

I hope it will help you..

Answer 2

Answer:

the second electron gain enthalpy of oxygen is postive