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Ionization Energy

Posted: Wed Oct 24, 2018 10:35 pm
by Layal Suboh 1I
Why does sulfur have a higher ionization energy than oxygen?

Re: Ionization Energy

Posted: Wed Oct 24, 2018 11:28 pm
by Emmaraf 1K
Are you referring to a specific question? Looking at a chart online for ionization energies, it says the ionization energy for sulfur is less than oxygen.

Re: Ionization Energy

Posted: Thu Oct 25, 2018 1:04 am
by Sabrina Ryu 3L
I think you mean nitrogen and oxygen? That is one of the exceptions to the ionization energies increasing from left to right, because oxygen is in group 16 and nitrogen is in group 15. This is because the electron configuration of nitrogen is more stable, because all of the p orbitals only have one electron in each subshell while oxygen has paired electrons in one of the p orbitals. This makes oxygen more willing to give up an electron than nitrogen.

Re: Ionization Energy

Posted: Thu Oct 25, 2018 11:09 am
by Kevin ODonnell 2B
Emmaraf 3K wrote:Are you referring to a specific question? Looking at a chart online for ionization energies, it says the ionization energy for sulfur is less than oxygen.


Here is the chart they were referring to. It may help to have a visual to better understand the concept:

Re: Ionization Energy

Posted: Thu Oct 25, 2018 9:35 pm
by Mallory_Podosin_1H
I was wondering the same thing... maybe just an exception??

Re: Ionization Energy

Posted: Fri Oct 26, 2018 11:25 am
by Charles Gu 1D
Sulfur has less ionization energy than oxygen since its valence electrons are at a higher orbital and since the distance is farther, it would be easier to remove an electron due to shielding.

Re: Ionization Energy

Posted: Fri Oct 26, 2018 3:32 pm
by Rosha Mamita 2H
Down a group there is a greater distance between the nucleus and electrons of an atom because of added energy shells, so because sulphur's electrons are further away from its nucleus than oxygen, it will take less energy to remove an electron from sulphur. The farther an electron is from its nucleus, the easier it is to remove the electron.