Ionization energy

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Kassandra Molina 2B
Posts: 43
Joined: Wed Nov 16, 2016 3:03 am

Ionization energy

Postby Kassandra Molina 2B » Mon Nov 13, 2017 9:57 pm

In ranking C N O F in order of increasing ionization energy, the answer is C<O<N<F; but why is Oxygen more ionic than Nitrogen?

Maeve Gallagher 1J
Posts: 56
Joined: Fri Sep 29, 2017 7:07 am

Re: Ionization energy

Postby Maeve Gallagher 1J » Mon Nov 13, 2017 10:09 pm

oxygen has a lower ionization energy than nitrogen because nitrogen is more stable. Nitrogen has one electron in each of its 2p-orbitals, while oxygen has 2 electrons in one 2p-orbital and one electron in each of the other two. This makes nitrogen more stable as its electrons are more evenly distributed through its 2p-orbitals. Since ionization energy is the energy needed to remove an electron, oxygen's would be lower so that is 4th electron can e more easily removed to reach nitrogen's valence configuration.

Radha Patel 1D
Posts: 25
Joined: Sat Jul 22, 2017 3:00 am

Re: Ionization energy

Postby Radha Patel 1D » Sun Nov 19, 2017 12:46 am

Because N has a full half-shell and the orbitals are equally filled by one electron, it is more stable. Oxygen is closer to having a full octet and wants another electron more. It would be harder to take an electron from Oxygen's valence shell.

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