Question

3. Contrary to the expected trend, the ionization energy of O is than that of N. Explain why. Insert MORE or LESS in the blank above

Answer 1

② the ionization energy of that of no reasons o is ce less than of oxygen is Elutrone configuration 28² 282 apt (11 ILIT 1 252 2p of retrogen is Electronic configuration 18² 26² 263 174 252 - 2p3 It is expected that oxygen has a higher ionization energy than nitrogen but it ů not so because Mitrogen has a hay filled ep orbital, as we know that an atom containing half filled or fully filled orbitals are very stable. so when it is already stable, why would it want to Lose an electron upon supplying energy and become unstable. on the other hand, since is already unstable relative to Mitrogen, by losing one e it attains a stable half filled 26 orbital so onygen undergo ionization at a relatively lower energy than Mitrogen,