Question

Nitrogen has higher ionization energy than oxygen

Answer 1

Answer:

Nitrogen has a half filled orbital. ... On the other hand, since Oxygen is already unstable relative to Nitrogen, by losing one electron it attains a stable half filled orbital. So oxygen undergoes ionisation at a relatively lower energy. This is why nitrogen has a higher ionisation energy than oxygen.

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Answer 2

Answer:

Explanation:

As N2 have 3 bonds in its molecule it's hard to break 3 bonds

O2 have only 2 bonds in its molecule

So ionization depends on bond strength