Question

Second ionization enthalpy of O is O+ or O+2??

Answer 1

Well, the first ionization of the `"oxygen atom"` is represented by the equation...

Explanation:

`O(g) + Delta_1 rarr O^(+)(g) + e^(-)`

And the second by...

`O^(+)(g) + Delta_2 rarr O^(2+)(g) + e^(-)`

`"A priori"`, would you expect `Delta_1>Delta_2`? Why or why not?

See here for data...