C2+ C2-

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Derek Waters 1A
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Joined: Thu Jul 13, 2017 3:00 am

C2+ C2-

Postby Derek Waters 1A » Sat Dec 09, 2017 5:30 pm

Why does C2- have a stronger bond than C2+?

Emily Glaser 1F
Posts: 156
Joined: Thu Jul 27, 2017 3:01 am

Re: C2+ C2-

Postby Emily Glaser 1F » Sat Dec 09, 2017 6:02 pm

c2- has two extra electrons, therefore, it has a higher pulling power since more negative charge

Neha Divi 1K
Posts: 31
Joined: Fri Apr 06, 2018 11:02 am

Re: C2+ C2-

Postby Neha Divi 1K » Sun Apr 15, 2018 7:46 pm

In addition, if you focus on the valence electrons, there would be 8 electrons for C2- while there would only be 4 electrons for C2+. Therefore, the 8 electrons would fill up both outer orbitals, the s and p orbitals, while for C2- it would only fill up the 1s orbital and have 2 electrons in the 2s orbital. Therefore, C2- has a stronger bond as it is more stable and harder to pull an electron away from it.

Megan Phan 1K
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Joined: Fri Apr 06, 2018 11:04 am

Re: C2+ C2-

Postby Megan Phan 1K » Sun Apr 15, 2018 10:52 pm

Since C2- has extra electrons, the negative charge gives it a stronger, stable bond that makes it harder to pull an electron away. In valence electrons, there are 8 VE for C2- and 4 VE for C2+.

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Re: C2+ C2-

Postby Chem_Mod » Mon Apr 16, 2018 1:03 pm

You would need to draw the molecular orbital diagram with bonding and anti-bonding orbitals. We have not covered this yet, but the rule is that you have more stability if more electrons are in the bonding orbitals than the anti-bonding orbitals.

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