Why does o have lower ionization enthalpy than n and f?
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Oxygen has low ionization energy (than that of Nitrogen). This is due to an electron being added to an already half full orbital in oxygen, which results in electron electron repulsion, which will lower the ionisation energy. Nitrogen also has the added stability of a half filled shell of electrons in the 2p shell.
And in 2nd case your question is wrong fluorine has low ionization energy than oxygen because in fluorine electron electron repulsion is high
And in 2nd case your question is wrong fluorine has low ionization energy than oxygen because in fluorine electron electron repulsion is high
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