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Ionisation energy of nitrogen is greater than that of oxygen because...

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Chemistry
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Ionisation energy of nitrogen is greater than that of oxygen because nitrogen has

Answer & Solution
Correct Answer: Option C
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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