What is the ionization energy of oxygen?
The first ionization energy of oxygen is 1313,9
Ionization energy generally increases across a period as a result of a higher nuclear charge, however there are some exceptions such as Boron which has a lower ionization energy than Beryllium (because it is in a P orbital), and Oxygen which has a lower ionization energy than nitrogen (Because ionization decreases the electron electron repulsion in its orbitals).
Aww, so, u been worrying about Oxygen ionization energy? worry no more because your answer is here finally!! The first ionization energy of Oxygen is: O(g) + e---------- O-(g) 1st EA=1314 KJ mol-1 second Ionization energy: O-(g) + e- --------- O2-(g) 2nd EA=3388 KJ mol-1 please draw an arrow where u see (---------). Hope this may help you!!