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Topic: Paramagentic or diamagnetic atoms  (Read 4645 times)

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Offline poao

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Paramagentic or diamagnetic atoms
« on: November 14, 2009, 04:12:23 AM »
Hi,

I have the following question:

Determine whether the following molecules are paramagnetic or diamagnetic:
1. B2
2. C2

I would appreciate a little explanation.

Thanks in advance,
Poao
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Offline sjb

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Re: Paramagentic or diamagnetic atoms
« Reply #1 on: November 14, 2009, 04:52:21 AM »
What determines whether a molecule (in this case) is para- or diamagnetic?
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Offline poao

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Re: Paramagentic or diamagnetic atoms
« Reply #2 on: November 14, 2009, 05:23:27 AM »
The electrons.

  • All electrons are paired -> diamagnetic
  • There is a non-paired electron(s) -> paramagnetic

My problem is that I cannot determine what is the molecule structure.
For example the C2 can have several options for the C-C bond:
  • Single - in this case there will be one electron not being paired
  • Double - all electrons are paired
  • Triple - one electron from each atom will not be paired

Regards,
Poao
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Offline sjb

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Re: Paramagentic or diamagnetic atoms
« Reply #3 on: November 14, 2009, 05:49:00 AM »
Can you draw an MO diagram for each of your molecules?
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