Midterm Review Problem 10 d

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Kallista McCarty 1C
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Joined: Wed Sep 18, 2019 12:18 am

Midterm Review Problem 10 d

Postby Kallista McCarty 1C » Tue Nov 05, 2019 10:58 pm

Rank the following in order of increasing ionization energies: C N O F

I thought the answer would be C<N<O<F, but the key said C<O<N<F can someone please explain this?

AlyshaP_2B
Posts: 112
Joined: Wed Sep 18, 2019 12:19 am

Re: Midterm Review Problem 10 d

Postby AlyshaP_2B » Tue Nov 05, 2019 11:01 pm

Oxygen has a lower ionization energy than Nitrogen because of the 4th electron joining. Having 2 electrons in the same orbital increases the electron repulsion, making Oxygen more likely to want to give up an electron.

Michelle N - 2C
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Re: Midterm Review Problem 10 d

Postby Michelle N - 2C » Thu Nov 07, 2019 9:28 am

Oh.. yep. Definitely wrote something completely different.

Is oxygen the only exception from this trend then? Asking for future reference and learning.

Michelle Chan 1J
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Joined: Thu Jul 25, 2019 12:16 am

Re: Midterm Review Problem 10 d

Postby Michelle Chan 1J » Thu Nov 07, 2019 11:08 am

If you draw out the three orbitals, N is more stable because they are each filled with one e-, thus O would want to lose one to become more stable.

MTanikella_1K
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Joined: Sat Jul 20, 2019 12:16 am

Re: Midterm Review Problem 10 d

Postby MTanikella_1K » Sun Nov 10, 2019 7:01 pm

Oxygen is an exception to the trend because it is easier for oxygen to give up an electron to have a more stable configuration than it is for nitrogen to give up an electron. This is because nitrogen has three electrons in the p orbital, which is relatively more stable than the four electrons oxygen has in the p orbital.

RichBollini4G
Posts: 100
Joined: Wed Sep 18, 2019 12:18 am

Re: Midterm Review Problem 10 d

Postby RichBollini4G » Sat Dec 07, 2019 5:45 pm

MTanikella_1C wrote:Oxygen is an exception to the trend because it is easier for oxygen to give up an electron to have a more stable configuration than it is for nitrogen to give up an electron. This is because nitrogen has three electrons in the p orbital, which is relatively more stable than the four electrons oxygen has in the p orbital.

very helpful, thank u


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