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

@oldrin.bataku

Answer 2

it appears this is essentially the same as electron affinity... anyways, the second electron gain enthalpy would be expected to be less negative. after gaining one electron there is a stronger repulsion against others

Answer 3

maybe I'm confusing yourself... if it is positive put positive