Question

good evening guys ♥♡♥♡♥♡♥♡♥♡
give reasons that why oxygen has lower ionization enthalpy than nitrogen and fluorine ??

thank u :-)​

Answer 1

Answer:

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.