Ionization Energy: Oxygen

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Christine Chen 1H
Posts: 64
Joined: Fri Sep 28, 2018 12:18 am

Ionization Energy: Oxygen

Postby Christine Chen 1H » Sat Nov 03, 2018 11:40 pm

Can somebody explain to me why the ionization energy of oxygen is less than nitrogen despite oxygen being further right on the periodic table?

Ariel Cheng 2I
Posts: 67
Joined: Fri Sep 28, 2018 12:29 am

Re: Ionization Energy: Oxygen

Postby Ariel Cheng 2I » Sun Nov 04, 2018 12:43 am

This is because oxygen's 2p orbitals has 4 electrons (1 paired, 2 unpaired). Losing one electron from the pair would create a half filled stable orbital which is desired, hence the low ionization energy!


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